I carried a business card, I find it easier than trying to have someone write down email or web site info. It is especially nice if it is raining. I included the line in my talents, "Dragon Slayer." I figured it was a medieval route and there was always a chance of a dragon popping up. When people would see how old I looked they would usually draw the conclusion that I must be a retired dragon slayer. it was a great conversation starter, I never had difficulty engaging people. Hint: don't print cards on ink jet printers, the colors run if wet, use a laser printer.
Other useful things we carried was a three way power-outlet adapter so we could share outlets for charging things. (If you do carry one, be sure to carve your initials into it so everyone knows you're not stealing it.) Also, be sure to carry a headlamp, having a hands-free flashlight is a must.
In places that had "questionable" pillow cases we would use a spare tee shirt as a pillow case over the pillow.
Lots of good ideas in this forum, keep it up!
Dennis, "K1"