I like cufflinks but that is a collection and a half.
I have about six sets, no photos handy but will take some soon. My favorite (most worn) are a nice silver bar set my wife bought me, they are quite subtle and don't compete or clash with just about anything. I have set I bought while on the QE2s third last trip. made from Sterling silver they are a miniature QE2, a little bit tacky but I thought novel and collectable.
I know I have a nice black and white set I usually use with the tux but I haven't seen them in ages.....I am hoping that my wife put them away because the last time I was at a Tux appropriate event I couldn't bite my fingernails by the time I got home, 25 year old malt and expensive cigars, felt like shit in the morning but I know I had a good time on the night.
I love the Dunhill propellers, those are unusual. The last picture with the blue ones in the box are interesting as well, I was looking at a blue set recently but didn't buy them, couldn't make my mind up.