I thanked everyone who came to my wedding. I don't think money is always poor taste. I've received money for baby showers and my kids, and always like to send a thank you to let them know what the money went towards so they can enjoy it in that way.

We received heaps of gifts for our engagement party and did the whole opening in front of everyone. Being excited and thanking people along the way. And they were basically the same guests to our wedding. So we already had all those typical gifts ie platters, vases, knife/cutlery sets etc.