I quite like 'clever' plates and/or would have loved something like B88BBB or SS55SSS for obvious reasons.
I also like plates that have letters but look like Roman numerals XMC1X or even MOG 1V for example.
The Aero plate I have came from a 'eureka' moment when a young lad utterred those memorable words "ooh Aero!" as I drove past. I logged onto DVLA that afternoon and £250 later OO0 4ERO Was mine

As for everyday cars I am lucky my surname (ABBOSH) is both rare and 'possible' thus my wifes car carries R88OSH (I know, close, but no banana) and my car A88OSH (was at DVLA auction after I requested it, I bid a closed bid of £4000, and got it for £350

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