I enjoy travel and learning about new places. I especially like postcards with:
Churches, Cathedrals, Mosques, Temples, etc.
City view (single or multi)
These are just suggestions, and I will be happy with any card I receive. I would even be happy with a postcard made from a cereal box or any other food product box. Other handmade cards are also appreciated. I do prefer postcards written on and stamped without envelope.