A small-parts box should keep pieces separated when carried, not only when it sits flat. For miniature bits, check the gap between dividers and lid. For tiny magnets, use a separate secure inner container so they cannot migrate between compartments.
Choose a real storage format
Plano’s StowAway Waterproof 3700 is a documented adjustable-compartment box to compare. Measure your pieces and check the exact variant’s layout. Do not assume every 3700 box has the same dividers or depth.
Search Amazon for Plano StowAway Waterproof 3700
An OtterBox cooler or a similarly named tool-storage case is not automatically a small magnet organiser. Match the actual model and product photographs rather than a long marketplace title.
Separate by the next decision you need to make
| Contents | Useful label |
|---|---|
| Weapons and arms | Kit, side and assembly option |
| Bases | Diameter or shape and project |
| Magnets | Measured dimensions and polarity reference |
| Spare heads and details | Kit or compatible scale |
Store sharp blades in guarded holders, not loose among plastic parts. Keep printed kit instructions or a note linking parts to their original sprue.
Small magnets need secure storage
The CPSC warns that swallowed small powerful magnets can cause serious internal injury . Keep them inaccessible to children and pets. A snap-lid organiser is not proof of child resistance. If ingestion is suspected, seek immediate medical help.
Count magnets before and after a work session and close the container before clearing the bench. Store them separately from small steel parts so an accidental cluster does not hide a missing magnet.
For carrying the wider painting kit, see travel case planning . A modular box that fits the actual pieces is more useful than a large chest filled with mixed unidentified parts.