Just upstream of the slide at Slide Rock SP sits a large, roundish basalt boulder that has been smoothed over by the water to a slick, glassy surface. This rock is slippery!
Although there are many overhanging slopey problems that are V-hard, there are areas with enough suprisingly positive holds to link up several routes to play on from 5.10 to V2+. Try them barefoot for an extra slippery time!
There are also some good, easy problems in the sandstone bluffs next to DBB around the man-made structure, a few of which are actually quite clean.
To get there drive North on Hwy 89A from Sedona to Slide Rock SP. You can park at the park for $8 or park on the road near there and find a spot to drop in to the canyon. The boulder is a couple hundred yards upstream from the bridge.
This is a fun place to finish the day after climbing in Sedona. If you go on a hot weekend, be prepared for some non-climbing crowds swimming in the creek.