The official LGMH is actually a mickey shaped paint chip from home depot in the color Alien Green. You can take the mickey head off the background and put 2 back to back and laminate them (important to laminate so they are stronger and also so they don't get runined if they get wet). You can write your screen name on it or Do you Dis? or somethng like that. A lot of people put it on a lime green ribbon or a key chain (some people add beads) and then they hang them from their backpack, stroller, lanyard, and/or whatever else they have with them in the parks.
I actually made my own on the computer and printed it out so that I could print my screen name on it (i have horrible handwriting). I had one of those foam ones from DLR too but it broke the first time i had it at the parks.
I have a picture but I don't have time to post right now. If no one else has posted one I'll try to do it later this afternoon.
Hope that helps explain it.