My wife and I have alts all over the place.
For a long time, we would alternate our regular playing on quieter servers, with playing our Freedom server Holiday Heroes SG - full of Holiday Themed characters for all seasons, at times when the server wasn't so busy.
We started out one winter, and then added characters as each holiday season approached, leaving characters alone until their season came, except for Anniversary badges.
Note: "Naughty List Ninja" and "Santas Helpa" had just become Heroes at the end of last year's play having originally started long ago on villain-side. (NLN=Energy/Energy Stalker ---SH=Robot/Traps MM)
The Gingerbreads, Autumn, and Patriotic characters are all 50's, the rest are late 20's to late 30's in level.
We have a similar group Villain-side that we didn't play as often "Holiday Hooligans SG"