I've got loads of that kind of thing, just took a quick snap of the ones that were to hand, although not all of this is WW2 stuff, I've got plenty of WW2 stuff too!
On this picture you can see, the ejection handle from a Martin Baker seat out of a SEPECAT Jaguar, the ejection handle shroud from a MiG-29 (got most of the seat from that one too, it was the one that was used at Fairford a few years ago when a MiG-29 pilot ejected at an airshow), the Swastika armband is one that was never issued, it still has the little paper sticker inside, it's apparently a Hitler Youth version, the cardboard box contains a replacement port wingtip navigation light for a Spitfire, and is date stamped August 1943, apparently it was made in Canada, so I presume it dodged its way past a U-Boat or two on its way to the UK!
Probably one of the most interesting things I have is a collection of pieces of a Spitfire that was shot down during the Battle of Britain (R6753 XT-G), flown by Colin Pinckney, if I can dig those out, I'll take a picture of them, it mostly bits of the engine but there are a couple of panels with the camouflage paint still on them too.
I've also got a coffee pot with a Swastika stamped into it surrounded by a cog with gears on it, which appaerently was the labour division's variant of the Nazi symbol, it belonged to a German officer and came to me via the Polish lady (now deceased) who was employed as his maid. She apparently took it along with a lot of other stuff when he was busily running away from the advancing Russian army! That still gets used actually, as it keeps coffee very hot, and is an interesting conversation piece, although I do usually end up having to point out that I'm not some sort of closet Nazi when people see it!
Chock