If space is limited, and you don't have a ton of buttons, you could go with my personal choice for button storage. I just throw them all in an old silver dish that a friend bought for me in Mexico. I love this piece, and I leave it sitting out beside my sewing machine. I love to just dip my hand into it and dig for that perfect button. I know it isn't necessarily “organized”, but it works for me.
Maybe you have plenty of space, and if you have a lot of buttons, these plastic containers with compartments are very functional. If you would like something more compact, small metal tins work perfect and can be easily stacked to save space.
If you are looking for something more decorative, fun jars might be what you need. You can get all shapes and sizes based on your space and how many buttons you have.
One of my favorite button storage ideas is the converted spice rack! It is functional, decorative, and a space saver!
The possibilities are endless with button storage! Have fun with it and happy scrapping!