I don't travel around so I don't have a giant tool box I take with me. I have a small tool box that holds all my bike stuff, minus a pump and a hammer.

I put my grips on with spray paint, then usually shoe goo the ends because I don't use bar ends. I've never had to put grips on while out on the road or whatever. i have TON's of cans of spray paint.....

been doing it this way for YEARS....