I keep my used Attys/ some Cartos/ Tanks, in the plastic coffee cans and I love pretzel rods and buy the small jugs of them and when done use those to store lots of stuff too,,, like juice bottles and other stuff, both of these are free and make for great storage containers for certain items, heck almost all my lose stuff goes into them, then I take a sharpy and mark the outside of the blue plastic coffee cans as to what's in them. Also the cheap Stanley hard plastic boxes at home Depot are great and fit 30ml bottles and have adjustable slots to make the sections as big or small as you want them.