Arts & Crafts...for you & the kids!
As always, the first thing to do is sort it all out. Spread out all your supplies to assess what you have. Start making piles - or categories - based on how you attack your craft projects. Should pipe cleaners be in it's own category? Or, would you only grab them when you'd also grab cotton pom-poms? If the latter, then pile them up together. It will get worse before it gets better; you've got to spread it all out to see what you have! But, it will get better.
Before we contain the supplies, sift through each of those piles to pull out anything you no longer want, won't use, didn't like and so on. Toss or donate those items.
If you'd like something a little more creative and accessible...think outside the box! Try an egg tray for small found items. Or jars for long brushes and pencils. Use drawers or large boxes for bulkier items. You can also hang things (rope, ribbons and anything with a hole that can hang on a hook) and roll things (large paper rolls or large pieces of fabric).
It's really up to you: what you have, how much you have and where you want to keep it. The important thing is to keep it all in mind.
Have you done something that worked great for storing your craft supplies? Share it with me! Have you been struggling with a particular space or item? Let me know, and we'll find a solution.