I have always been a hands on person and a person who will do everything so I tend to carry a full tool shop in the basement. Soldering iron and solder a floor jack that will lift one corner of the rig is nice and ready tools to change a tire. Along with the dicor you already have, some contact cement and a patch piece of EPDM membrane is a good thing to have on hand. WD40, dry lube spray, hand cleaner, a can of grease, rags, solvent are all nice to have but can be bought in a pinch. Small stuff like teflon tape, super glue, 5 minute epoxy are also nice to have. Other things I like that are not necessary are items like IR temperature gun, good grade tire pressure gauge, oven thermometer, meat thermometer, and finally, a Ronson rotissary.
-Paul R. Haller-