Nail varnish…And moving on from old paint, what about old nail varnish?

From the days when I actually used it, I’ve got quite a few half-bottles left over in all sorts of colours. Some of them have separated but recongeal with a quick shake, but I’ve only painted my nails once this year and can’t see myself doing it again in a hurry (for both aesthetic reasons and for the sake of my nails) so they’re pretty much redundant.

So what can I do with all the leftover nail polish? And what about the bottles with their little brushes - any reuses for those?

(Photo by tijmen)