Thanks to Becks Fagg and her blog I have come across this new storage product:
The UK based crafters are well aware of the Really Useful Boxes, as they are called, or RUB as they are written on the boards. I have quite a few of the boxes in three sizes and, although they are a really good product, they are not perfect for me. The reason is simple: I like boxes that don't stack on top of each other because when I want to get to the bottom one I don't want to have to take all of them out to get to the bottom. However, the stacking situation makes lots of people happy, so who cares what I think!
I also think that this box could be great for Debbie's rub on storage idea which could be adapted for stickers sheets.