I posted this a while back:
I've just put together a set - in a great box I got from B&Q which has loads of tiny compartments - it carries on to the boat easily. It holds rather a lot.....but was a fun project to put together - and is nowhere near as big as it sounds.
Spare wing inflator unit
Drysuit inflator unit plus spare hose
Si tech drysuit dump
Belt buckle
Replacement hose for stage - tied
Swivels
Pressure gauge
Two spare mouthpieces
Spare mask strap
Schraeder tool
Set of allen keys (x2)
Set screwdriver heads
Socket set
Needle nose pliers
O ring pick
2 adjustable wrenches
Scalpels
Tie wraps (big and small)
Punch
Drysuit repair kit
Three tubes aquasure
Wax
Spare wrist and neck seals
Seal saver
Mask de fogging gunk
O2 clean grease
Normal grease
Reg blanking plugs
Spare bolt snaps
Triglides
Scissors
Analysis tape
Nitrox/Trimix stickers
Waterproof pens
Wipe off pens
White pen
Labels for stages (courtesy of Divesigns - MarkEm on DIRX)
O rings - large selection
Washers
Backplate bolts
Trigger pins
Volt metre
Spare prop blade
Pluggable relays
Trigger repair kit
Spare Gavin O rings
Lead lozenges
Spare clutch plate
Bungy (both sizes)
Bundle of cave line
Super glue
Stage leash
Snoopy loops (large and small)
Pre tied bungy for light ballast
Lighter (windproof)
RB spares and maintenance kit
Imperial bolts, wing nuts and allen keys
O ring picks from Peterbuilt
Driver for jubilee clips
Spare bulb
Test Tube
Switch and boot
O rings for Light
Small spray bottle of baby bath for bubble checks and seal donning
Oh and in case it's needed to get the tool kit home - tyre inflator widget
