From my ICU practice experience: (think I got most of the stuff)
top drawer- airway supplies
2nd drawer- drug tray (Epi (6-8 amps), atropine (3), Bicarb (2), Dextrose (2), Vasopression (40 units), Amiodarone (450mg total), Adenosine (3-4 6mg vials) (these are your ACLS drugs that would probably cover whatever you'd use in a standard code)
3rd drawer- IV and lab draw supplies: (IV caths, one of each lab tube, biohazard bags for sending to lab, IV start kits, 2x2s, tegaderm, tape, ABG kit, saline flush, syringes, IM needles, butterfly needles)
4th drawer: IV fluid (2 1L NaCl bags, pressure bag, Dextose 100mL (i think is what was in there, would be used to mix the Mag drip if ordered), dopamine gtt), have a couple primary tubing sets and a secondary in there
5th drawer: Extra defib pads, extra ECG stickers, pen, flashlight, NG tube & syringe
6th drawer: Misc supplies: Central line kit(usually an Introducer kit), sterile gown, sterile gloves, suction buckets, tubing for that
Don't forget your back board too!
For my sim lab, I went on Home Depot website and purchase a tool cart, much cheaper than purchasing an actual crash cart from a medical supply company, has 4 drawers and is on wheels. Works great. I just modified my drawers a bit since we don't use all those supplies in a simulation.
Hope this helps!!