These are all driving me mad at present. We seem to get a lot of post despite most things being online.
Where do you store and organise your important documents? Does it take up much space? How many years of things like bank statements do you keep?
Also - vitamins and supplements. I have lots taking up loads of counter space in our tiny flat. Then some stuffed in cupboard. I never know what I have (for example, sometimes I buy two packs of my folate supplement as it's cheaper, then forget I have the other pack in the cupboard). I need some kind of organisation system, but there's just no room.
I'm so annoyed with myself I can't organise this random shit.