DS has two small drawers at the top of his chest of drawers, which is also his change table. Nappies to the right, liners, covers (including unstuffed stuffable nappies) and AIOs to the left. Also there are some in the buckets, some drying on the airer if not in the "dry bin" from the line... I don't restock until there's room! And there is usually one in his little nappy change roll that we take out places for emergencies. We have 12 fitted bamboo, 13 flat, 2 AIOs and 4 stuffable. I've just bought a few more AIO/stuffable nappies too!

Old nappies are stored air-tight in the airing cupboard, or in my nappy seller's bag to show how they wear and that poo doesn't stain LOL.