Pre- baby Bucket List

My husband and I agreed to start a bucket list of fun things to try and do before we TTC. We just got married and moved into a little house so with our tiny savings this might take a while. Here's some of ours. Anyone have any suggestions? 
1. Go back to Kaanapali, Maui where he proposed. 
2. Fly first class to Vegas and stay in a suite.
3. Write separate letters to our baby before they are born to open on their 18th birthday. 
4 Camp at National Parks and drive through at least 5 states.
5. Travel outside the country