Super glue - Glue is on the list, I just don't have any yet
13mm socket and ratchet for twin band bolts - Good point..
Pliers and snips. - Live on my Swiss Army knife at all times

Black cord for pull dumps - only got one, and I don't use it. But I'll think about it
Surgical tubing - got some.
Allen keys. (hex keys?) - That's right

Assorted hoses. - working on it
Pack of NEW O rings u miser - I'll be ordering some later. I just had these ones already, and they were already lubricated too

Lint free rag. - good point
Gloves! I forgot to put my gloves in there! How'm I supposed to get my wetgloves on without shiny plastic ones underneath??
Do you need the special Scubapro spanner for undoing the hose from the reg??
- No. A normal one works fine.
I presume you've got in tank/1st stage O-rings - Multitudes

The other thing I'd suggest is to get about 5m of bungee - If I could find the sodding stuff, I'd have 10m of it in there...