I've just been playing around on a
New Zealand vanity plate web site, which allows you to type in a word and then it shows you a picture of the plate.
You can add designs and messages etc as well. The only draw back is that in New Zealand you can only have 6 letters/numbers on your plate.
So anyway here's some I made all based around either MacGyver or this site...



Give it a go and post your results. You may need to explain the plate if it's not obvious.
http://www.plates.co.nz