Little sets of shelves are ace. You can fill them with your favourite bits and pieces. Mine have Gregory Peck on them, a marble, a doll from Retrouve
, a caravan, a highland cow, an alabaster bird, a plate with a donkey on it, a wooden bird Amy bought me for my Birthday, a pretty felt doll that Zoë made for me, a Christmas present from Paul (those nesting owls are amazing, aren't they?), an old camera, my Wade Whimsies, a number of other gifts and wee bits I've picked up on my travels.
I like that you can change the way they look by just switching a few things around. The things you display don't have to be expensive, you can frame magazine clippings or display a favourite toy from your childhood. Amy has lego figures on one of hers. Zoë has some favourite buttons.