I don't have special theme for my small collection. But I am trying to cover as many diversities as I could, in terms of dial, material, and movement.
2 watches in two tone
2 watches in titanium
1 watch in full gold
6 watches in steel
1 watch in resin (a humble G shock
)
2 chronograph (one auto with date, one manual without date)
2 alarm watches (one with date, one without)
1 diver
6 watches three hander (1 with date, 2 manual wind without date, 3 auto with date)
1 digital
2 white dials
3 black dials
3 silver dials
1 grey/brown dial
2 blue dials
I"m tempted for dual time/GMT complication, but I very rarely travel, especially in pandemic like this, so it may be a much less useful to me.
Cheers.