When I went through my button collection on the weekend, one of the things that annoyed me was that I so often don’t use pretty buttons for my crafting or sewing projects just because I didn’t know I would have had enough matching ones.
I really love plastic containers with many different small compartments for sorting and storing stuff, but I have way too many buttons for that. And there are only 2-3 matching buttons for the most part, it’s not really a space-saver. (For buttons I stick to my old metal cookie boxes)
A very easy way I came up with was threading matching buttons on a string and keeping everything in place with a knot.
When there were no more than 2-3 matching buttons I just used a paperclip to keep them together. Very simple, very quick. Now with just one quick glance I can make out whether there are enough matching buttons whenever I need some for a project.