As time goes on I keep fine tuning what to bring. ATM card eliminates lots of cash. Plastic is your best option and gives you a detail of what spent and for what. Relative to clothing, I have slowly converted my underwear to the stuff Under Armor is made of and only take three shorts, three short sleeve T's three riding socks and every other day wash them in the motel sink. Did I mention that I don't camp, Hampton Inn is the most rustic I get. After 300 - 400 miles I want a hot shower and a soft bed. Two pair of jeans, a couple of cotton long sleeve T's, rain gear, leather jacket, heated jacket liner (all year for the heated jacket liner) riding boots, after ride shoes, and so one. It's a personal thing that each person needs to develop over time. Don't forget if you forget something you can always buy it and if you take too much UPS it back home, don't lug it for the whole trip.