That be good to have something seperate to store all your bits, you have quite a few bits to store especially if you buy in bulk. I just bought a few bales of hay which i've put one in the tub and then rest are plastic bags, i've opened them bit to air, it is in a shed so its dark and cool but it does tend to get damp in winter so I think i'll just buy one or two small bales at a time next time and bring the toy tub indoors into a closet we have its dark, no dampness no hot air or anything and then/ I have a hesian bag too so can put the second bag in there. What is the issue with mice? as the tub is open and the shed door doesnt close very well either?x