Mine takes up an entire 3 drawer chest (not a small one) - drawers are crammed. At the moment I’m on a using-up mission, aka no more orders from Wool Warehouse for a while - I’m only going to make items (for Knit for Nowt) with what I’ve got, so there’s a worry-eating frog and a ditto elephant limed up, both with matching hand puppets, and very likely another Rainbow Mog and Moglet, too.
There will come a point where despite a lot left, though, I’ll have to order more, since I won’t have enough of particular colours for anything - and I do always like to use the optimum colours. So many hours of knitting, but it won’t look as nice without the best colours for whatever it is.
I almost always order the same brand and colours, since leftovers are more likely to match up.