Yep, I'm a lot like nixer... I gots TONS of reptile stuff!

The main things I have are:
Extra thermostats
MANY Extra UTHs and flexwatt pieces
A box full of extra bulbs
Another box full of extra digital thermometers
Spare water bowls (I use ceramic dishes)
Stacks of plastic plant pots to be turned into extra hides
Already made extra hides
A tub full of spare fake plants and vines
Temp gun
Four or so pairs of tongs for feeding
Chlorhexidine concentrate, a gallon of mixed, and three mini spray bottles with the mix.
Bleach
Paper towels a-plenty
Two big containers of aspen and many smaller bags.
Many spray bottles and gallon jugs of water (for misting and refilling bowls)
Dozens of plastic Critter Keepers (holding/transport boxes for the smaller snakes)
'Small' Rubbermaid blue tubs (holding/transport for the bigger snakes)
A small drawer full of instant heat packs
Extra record sheets
A bottle of hand sanitizer in EVERY room!


And that's just the stuff for the snakes! I have two large tubs full of assorted spare stuff that I've been selling bit by bit for a while now.