With regards to wedding lists, we gave people the option of donating to a just giving page for charity or if they would prefer to do something the more personal then there was a "buy our honeymoon" list which included small things like a drink in a certain bar, medium things like specific activities and a few larger items like hotel upgrades for anyone wanting to be special. The plan is to take photos on the honeymoon of said drinks etc and post thank yous to those who bought those gifts.