Really Useful Box #3

This is a joy to keep things in. This sturdy plastic box with straight sides (not annoyingly tapered such that it pretends to be a perfect fit for your item until it reaches halfway down then wedges tight) and a snug fitting lid (it won't snap when you try to lever it off) with decisive lift-up, snap-on locking levers.

You could fill this with lead and be confident that it wouldn't give way. Use it as a seat. Stack them to form a staircase to reach high places. If the wolf came huffing and puffing you'd stack them in a stretcher bond and feel confident that he wouldn't blow that house down.

The only downside is that while they do stack beautifully they don't nest (the downside of those vertical walls). But if you've got these boxes then they really should be usefully full, not empty and nested without a purpose.