"Cool" things to do with crocheted doilies

I have some very fine cotton left over from a crochet project, so I've started making crocheted doilies cos I have a load of untitled patterns with no pictures from primary school days. I thought it would be a fun way to use up the cotton and discover what's behind all those 5th grade hand-written instructions.

However, I've no idea what to do with them. They are kinda more suited to an old-fashioned kind of home (cosy, with dark furniture and lots of old family photos - just my opinion), I just don't think they suit a modern looking house.

So I'm just wondering if anyone has ideas for what can be done with these? I don't really want to sell them or anything, but I don't want to put them out on table-tops and on mantelpieces. Someone suggested joining them to make a table-runner, but would need to figure out how I'd join circular patterns of different dimensions...