I just had a converstation with someone who made a plate, that he hung on his ladder, where he could put signs and stickers. (Like irv2 and FMCA stickers) The only problem was it interfered with climbing the ladder. I told him that I cut a piece of Lexan and screwed it to the bottom of my licence plate. Other than the fact that mine's too small to fit my irv2 sticker, (I'll make a new one a bit longer) it's a good way to attach thing to your MH without actually putting it ON the MH.