What gift should I buy my Fiancee for our wedding?

I’m getting married very close to christmas this year and I’m a bit stuck on what to buy my future missus, I’ve been looking at something personalised for our tree possibly?! but cant seem to find anything quite right. The 1 thing I have heard about is a personalised star to sit on top of the tree which can be engraved but cant seem to find 1, any ideas?