A simple low profile set of multidirectional wheels using 8mm steel balls. 

Good for light weight items, garbage bins, small storage bins, small tables.

Heavier items will cause the steel balls to lockup. Even lighter items tend to be enough that they dont roll around on their ow which is nice.

Designed so 8mm balls easily snap into the bottom of the bases.

Use double-sided tape to mount to whatever you want.

Or remix them into your next design.

Useful for my needs, likely useful for a few others.