Picture Hooks. I include a picture hook with each tile but I leave it to you to attach it. I'd recommend Araldite or Gorilla Glue to attach the hooks - make absolutely sure the hook is well and truly stuck before putting your tile/s up!
Command Strips. These are sticky strips that come in two parts and are extremely secure and easy to remove if used correctly. Click here for more info
Frames: standard "tile frames" allow you to drop the tiles into position and glue them from behind. No glass or pins to worry about - just stick the tiles in place and hang using the ready-made frame.