At the dollar store (at least mine does) have 2.5 gallon zip bags. I use them to put projects in that I am working on. or separate materials into color schemes. when done....I recycle them to my next project. sorry to say I have too many projects going and had to buy more. ooops
I use pill bottles for old needles like everyone. but my extra, I take to the sporting goods shop and they use them when the fisherman buy flies. this way they do not smash in a bag