[Mumble-bee]

U-1 & U-2 are parts from MASK Piranha cycle
U-4 & U-7 –*weapon & windshield for MASK Gator jeep
U-5 – missile from MASK Vampire cycle
U-6 –*part of Transformers Dark of the Moon Autobot Armor Topspin character
U-8 – canopy from MASK Bullet cycle

W-4 – Scorponok figure from Transformers live-action Movie Voyager-size Blackout character

X-2 –*gun arm for MOTU Trap-Jaw, but vintage version is supposed to be black, so maybe it's from the modern line?
X-13 is a searchlight from G.I. Joe – but I don't know what from. a darker gray version comes with Check Point Alpha.
X-15 = rocket from G.I. Joe Cobra Fang helicopter

Y-6 – gun from G.I. Joe Cyber-Viper (1993)

Z-13 are LEGO hoses
Z-14 –*backpack for G.I. Joe Blizzard character

AA-2 LEGO halberd
AA-6 flap from Cobra C.L.A.W.
AA-12 He-Man's battle axe

BB-8 is G.I. Joe Destro's pistol, blue means it's from an accessory pack
BB-9, 10, & 15 are Star Wars weapons. 10 (as noted above) is Emperor's cane. 15 is a Stormtrooper blaster (which came with other figures).

CC-4 is accessory pack version of bazooka from G.I.Joe 1982 Zap character
CC-6, 8, 9 are all Star Wars weapons

DD-1 is Transformers Armada Mini-con "Buzzsaw", missing the gun arm, from the "Road Wrecker" team
DD-8 is Skyblast from Transformers Armada Space mini-con team - missing parts