I've done sports tickets and concert tickets, weekend getaways have gone over really well too.
2 nights stay at a nice place, could be a swank cabin on a lake, or in a metro a couple hours away with a gift certificate to a super nice restaurant.
I also like to do bottles of expensive booze, my org. we were connected to the entertainment industry so we had a party atmosphere and a $200 bottle of whiskey was always appreciated.
I try not to go for the fad thing on the market but classic/classy things that reflect the culture of the org. or something that's an experience the rep can enjoy with their friends or family, help them go let loose and have fun on their down time, so they're energized and motivated on Monday when it's time to grind.