Can't go wrong with a little bracelet or necklace. Just make sure you know whether she likes gold or white gold/silver.
This year we've decided to buy a new TV rather than get individual presents (just moved in together). This does not under any circumstances mean I don't have to get her at least five small presents, value not particularly important. No matter how often they say,'we'll get it between us', or 'I don't want a present', they mean 'you better get me something nice or I'm not touching it for a month'. Always be prepared.