Hi Wrenn,
Other people have asked me this before but I never really went in depth about it so here is the breakdown.
I've also updated some photos in this reply as well.
Armory and Suit Compartments
Suit Compartments x3: Various releases of the Kenner, Wayne Manor playset
Door handles for suit compartments x3: Sonar Sensor Batman from Batman Forever toyline.
Batarang Cabinets x3 custom built by me.
Glass jar for original Batman costume: Dollar store.
Mission Case Tables: Found in the trash of a retail store.
Wayne Tech Mission Cases: Various Batman begins action figures from Mattel.
Custom Mission Tech cases: 2 from Bratz figures and 2 from a little mag light I got recently.
Duffel bag: I'm not sure.
Batarangs/Batguns x42: Various Mattel and Hasbro/Kenner Batman figures over the past 23 years. Way too many to list.