Oops - let's try putting that message in the right place...

How about car markings - specifically, the Maker's Badges, Lettering, and the Model of car - i.e. 'Ford', the Blue Oval, 'Escort', '2.0', the octagonal 'MG' badge, etc etc etc.
1/24-1/25 (and 1/32, which tends to be a bit of an orphan scale.)
My reasoning is that, even in the larger scale, they can disappear under a coat or two of paint and in the smaller, forget about trying to paint them.
I have some diecast 1/32 cars which use them, they don't look too shabby at all.
I understand you may run into licensing problems - 'ware Corporate
Sharks err, Lawyers - but some generic lettering that happens to be the right Font and Size could get around that.
Or do what I saw done on a remould of the old Moon Rocket, a transfer calling it the 'Fastway Express', since TWA wouldn't come to the party...
"FLOORD", "HOLD-EN", etc, maybe.
Just some stray thoughts from Left Field.
