I decided to use photos / old maps Joe and I had collected on our recent trips instead - came out awesome and will make a great personalized gift!
First measure out your tile and make a cardboard copy. This will help cut perfectly square felt pieces to go on the bottom of the tile and help you cut out your maps/photos. **try to ensure your items are flat prior to crafting, flatten maps with books if they have ceases!
I doubled up the bottom felt! I'd almost suggest using cork instead! Seems better than a ceramic breakable tile?! :)