That's some seriously cool stuff Ray and Paul. I don't have any serious collections as such, but have collected some aviation nick knacks over the years. Prized piece is my F-105 throttle assembly. I will probably donate this back to a suitable organisation back in USA when I find the right way of doing this. I'd like to see it properly displayed somewhere, not just gather dust here - it's just too precious for me to own it.
I've have two Russian a/c clocks (MiG or Suk - anything for that matter) which I love - they are so cool! They look like this below.
A mate gave me a pair of RAF Mk.VIII flying googles with all the extra bits in the original box - very cool! His father had bought some surplus after the war. I also have a hugely treasured Sperry Artificial Horizon circa WW2. My father did his instrument apprenticeship with Sperry as a teenager at the end of WW2. This was his start into the world of instrumentation which I followed into.
I do buy the odd "cool" aviation clothing (hats/t-shirts), but these just get worn out until they literally fall off my and the wife trashes them! Isn't it amazing that t-shirts become their most comfortable just prior to falling apart! So, they never last long enough to become a collection.
Just bought this cool hat - a must purchase for any self-respecting current or former Pitts driver!