Re storage space - we have a big cupboard with two shelves. Bottom has got 2 plastic boxes full of our skipping ropes, stilts, those ELC egg and spoon things etc in which get dragged out every week for the girls when they arrive, behind that is our bag of 2nd hand uniform and other bits that I don't use often (poster paint, aprons etc).
Top shelf has got a medium plastic box with cups, squash and biscuits in, a large Baker Ross box with crafts in - both full sets that we haven't done yet, and left over bits that I'm saving up for a "pick a craft" night at some point, a small cardboard box with pipecleaners, googly eyes, feathers, beads etc in, a plastic folding crate with paper, card, and bigger stuff, then small takeaway plastic tubs with the dreaded glitter, pencils, felt tips, rulers, glue, scissors etc in. All labelled with a sharpie :o
I've just been given a load of ice cream tubs, so will segregate stuff a bit more when I get the chance, but it's working pretty well for now. I spent an afternoon clearing out and sorting the cupboard while the Brownie leaders were doing theirs, over Easter, and it's really helped.