+1 on the shower cap for helmet cover, the hotel disposables don't take up any room and keep rain or cold wind off your noggin

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+1 on the latex gloves, easier to carry a few than figure out how to get that gunk off your hands after on-road service (spit not being my favorite option)

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The little single pack 'wet naps' from Hooters or your favorite messy food establishment, carry a half dozen for face freshening, hand cleaning (if you don't carry latex gloves) and disinfecting the 'naughty bits' after a ride if you can't get changed right away

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Cheap wrap around 'Terminator' style safety glasses in dark shades for going over the top of prescription glasses. The big side shields block both light and wind better than any clip-ons

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B'Dog