Right, you just pick them up at any Home Depot. What I usually do is peel the backing off, glue two together, then pick up some of those self laminating luggage tags at Wal Marts, write my screen name and cell phone # on the LGMH, then make luggage tags out of them to put on my luggage and also on the bag I carry to the park. Instead of laminating them, I may just tape some to my resort window or punch a hole in them, hang them from ribbon or thread and hang them in the resort window. I also usually stick some magnets on the back and stick a bunch on my room door. You can basically do anything you want with them.
FYI: There is a guy here on the DIS (BradisGoofy) that make really cute t shirts and caps embroidered with LGMH. He will put your screen name or real name on them. I've bought one of each from him and they are really nice.