Updated October 2026
A science kit missing one piece is a broken toy, and the parent finds out halfway through the experiment. We count kits part by part and scan each order twice. Educational toys also carry age-grade, small-parts and battery rules worth knowing before you choose a warehouse.
Learning toys, science and build kits, and educational games mostly ship as a box of many parts, and the hard part is getting every part into the box. We build each kit by scanning every part in against its list, then scan every order at pick and again at pack. The child gets a complete kit in the grade-level edition that was ordered.
By The Fulfillment.com team
Most STEM and educational toys aren't one object. A circuit kit, a microscope set, a coding robot or a block-based science set is a box of parts, and it only works with all of them inside. So the usual shipping mistake looks different here. The box is the right one and a part is missing. The parent finds out mid-activity, with a child waiting. Picking the right box is half the job, and every part being in it is the other half.
Selling to children adds its own rules. There's age grading, and there are small-parts and choking-hazard warnings. The growing number of electronic and robotics kits bring battery rules too.
Two things have to go right. Every part is in the kit, and the kit is the grade-level edition the customer ordered.
When we assemble or bundle a kit in-house, we work from its parts list and scan each component as it goes in. Nobody builds a kit from memory, and it's complete before it reaches a shelf. The parts come to us finished and certified, and we put them together without making, molding or changing any of them.
When a kit is ordered, it's scanned at pick and again at pack. Educational lines split into boxes that look almost alike, by grade level, edition and language. The scan keeps the grade-3 set on the shelf when the customer ordered grade 5. Our guide to variant and edition inventory management explains the bins and scans behind it.
Kit boxes tend to be flat, packed full and easy to crush. Ours go out in a carton sized to the kit, with rigid corner protection and the gaps filled snugly. Inside, the parts stay where they were packed. Outside, the sealed box and the age-grade and small-parts warnings printed on it arrive intact. Orders run through BestOMS, with Deposco running the warehouse behind it and Dropstream connecting your store and marketplaces.
Educational toys are children's products, and federal law governs the labels on the sealed box.
Most STEM and educational toys count as children's products, so the federal toy-safety rules apply, from third-party testing to the small-parts and age-grade warnings on the box. Meeting them is the job of whoever makes or imports the kit. A kit meant for older children but full of small parts depends on that warning being there and legible. Marketplace listing reviews look for it, and so do careful parents.
Our guide to children's product safety handling explains the standards in full. Making, testing and certifying a kit, and issuing its Children's Product Certificate, are not what a 3PL does, and we don't do them. The kit reaches us labeled, and we agree with you at quote how its certificate and label details are captured and checked.
Coding robots, electronic circuit kits and motorized builds bring battery rules with them.
A large and growing share of educational toys run on power. Robotics kits, programmable boards and motorized builds all do, and so do many science sets. Button and coin cells bring child-resistant packaging rules, and lithium cells bring hazmat shipping rules.
The right handling depends on the exact cells, how they're packed and where the parcel is going, and we go through each battery SKU with you when we quote. Our guide to battery-operated toy and lithium-battery fulfillment covers the battery rules in depth.
Most learning toys, science and build kits ship as a box of many parts, and a kit only works if every part on its list is inside. So we build each kit by scanning every part in against that list, then scan every order when it's picked and again when it's packed. Around that sits the usual work of receiving and storing your stock and handling the returns that come back after the holidays.
We check each kit against its parts list with a scanner instead of by eye. Every component is counted as the kit is put together, and the finished kit goes to its own barcoded bin. When an order comes in, the kit is scanned at pick and again at pack. That keeps a child from opening a science kit with a piece missing, and it catches mix-ups between boxes that look almost the same, such as two editions or two grade levels of one set.
Educational toys are children's products, so federal safety law applies. The mandatory US toy-safety standard is ASTM F963. Testing at a CPSC-accepted third-party lab backs each kit's Children's Product Certificate, each unit carries a CPSIA Section 103 tracking label, and 16 CFR 1500 sets the small-parts and choking-hazard warnings and the age grade on the sealed box. Certifying is the job of the manufacturer or importer, never the 3PL. We ship the finished kit already certified and labeled, and we don't test or certify it or issue Children's Product Certificates. How we handle the certificate, tracking label and small-parts and age-grade labels for your line is confirmed with you when you request a quote.
Many STEM kits carry button-cell, coin-cell or lithium parts, and each kind comes with its own named rules. Button and coin cells fall under Reese's Law child-resistant packaging and labeling. Lithium cells are regulated as hazmat for shipping under DOT 49 CFR 171-180, classed UN3480 when they ship loose and UN3481 when they ship in or with the equipment. Those are published standards, not a badge. Settle the battery paperwork and child-resistant packaging handling for each battery SKU when you ask for a quote, so the carrier doesn't hold a shipment.
A lot of educational kits come in flat retail boxes that crush easily and are packed tight with small parts. We ship them in a carton sized to the kit, with rigid corner protection and void fill snug enough that nothing shifts. The parts stay put, and the sealed box doesn't arrive dented. The age-grade and safety warnings are printed on that box, and marketplaces and parents expect to find them intact.
Educational toys come back in January along with the rest of the season's gifts, and a returned kit may have been opened or may be short a part. So we inspect and grade each one. A kit that is unopened or can be brought back to retail condition is checked against its parts list, repackaged and restocked. An opened or incomplete kit is pulled out, so it never ships again as new. Counts on hand update live as each kit clears.