Great lists! I forgot there were pistol replicas... And 21 only?! Phew... Hats off to whoever finds a set!
For me, in no particular order (missing two things for now):
ACR Ezio bust
AC4 Edward bust
ACR Portal statue
Most of the lithos and canvases. If I could only choose one it would be ACR Ezio.
AC3 Tomahawk
AC3 flag kit
McFarlane Edward statue
Sketches from Cameron Stewart, Nadine Thomas and Karl Kerschl (or comissions from any concept artist)
Honorary mention:
Civil War Assassin painting at Ubiworkshop... True, each arludik canvas prints are one-offs. But the one at the shop is a bonafide painting!