I have the quite unusual Y-Spoke wheels on my car, but an old steel (although full size) spare.
So the other day I took the opportunity of the Rimmers mega-sale to pick up one more Y-Spoke at what I thought was a good price.
Got a new tyre put on it yesterday, so now I have a nice new spare wheel that no-one is ever likely to see, but at least
I know it matches all the others
! And if I do get a puncture I don't have to do a double swap.
(I therefore also have a full size steel wheel with a not very good tyre on it that I will shortly put in the Freebees section.)