Hubby saves up his points for travel and airline miles. We got half of our flights to Costa Rica with miles a few years ago, and now he's saving up for a trip to Scotland or Japan, he hasn't decided yet, lol. I guess it depends on which will be most feasible with a toddler in a year or two.
I realize I don't have a specific use for mine - I have a combined ~$600 in rewards sitting on a few cards, and I don't know what to do with it. I feel guilty using it for "things" for myself, because most of my hobbies are pretty low-expense so there's nothing I've been waiting to get.
OTOH, I just saw a program through CSU Extension for a Master Gardener certification, and it costs just about $650, so maybe I'll do that :) I literally just this minute thought of that, so thanks for posting this question and getting me thinking!