These little dividers fit perfectly into the clear mini bins; they also work great to create sub-sections in larger clear bins. They won't slide around if you measure what you need and they work miracles to keep supplies neat and easy to reach.
I use them for office supplies with the narrow clear bins you can find HERE and HERE. They'll keep you from cursing as you put on your makeup since you'll be able to easily grab and find everything you need.
The small dividers fit inside each of the mini bins for sub-organization and to keep items from flopping around.
Dimensions
Small 2-3/4" x 4-1/4" x 2-1/2" h
Medium 4-1/4" x 6" x 2-1/2" h
Tall 2-5/8" x 4-1/4" x 4-1/4" h