They are just so dang cute!! And equally as easy....
1. OK so, cut a big piece of card board. Big enough for all your scrabble pieces to fit in. I used four by four coasters. You might want 5 by 4 or five by five. Lay out your tiles straight on your card board, you may want to use the ruler to match it up. Carefully place your variety on top so you can see that the cups will fit. If they do, move onto the next step, if not add some more tiles. Darn it, not letting me move onto the next step again so I will do it here again.
2. Now move all the tiles off except the one at the top corner. Glue that one in place. Then match up your tiles as you go and glue on one tile at a time. Make sure they are tight and touching, and go in your same pattern as step one.
3. Now once they are glued and dried a little bit cut nicely around the edge of the card board, try not to have card board showing! Place a heavy book on top so it will stay flat as it drys.
4. Make some more! If you like glue felt to the bottom so heavy cups won't scrape on the bottom of your table.