Gotta have the duct tape, electrical tape and zip ties .... add a hammer and you can fix just about anything on land and sea ...

I have a bunch of first stage plugs in my kit too, and a spare low pressure hose. Sometimes you have to do some configuring to help somebody out of a jam.

Drysuit zipper wax, if you dive dry?

Any meds I keep in the first aid kit. Maybe we should start a thread for what should go in a diving first aid kit too . . .