For sound reports I use a small clipboard that sits inside the front pocket of the portabrace bag I mix out of. I made personalized sound reports containing all my contact info and production essentials that allow me to put simple information about scene/take/track assignments, etc... plus a few other things.
The clipboard fits a sound report that is 1/2 the size of a standard 8 & 1/2 x 11" sheet. It carries enough extra sound reports for a couple days, plus all my copies in a separate section just to be able to deal with calls from post on the fly (I make 4 part reports @ Kinkos; 2 copies for post, 1 for production office, 1 for me). I also place the same clipboard on my mix cart when mixing off the cart so the sound reports are the same for any scripted project.
For slating I have a couple Denecke TS-C Slates that I jam off my recorders timecode and hand off to camera. They'll take care of labeling each take on screen and clapping sticks for an A & B camera. I make sure to keep a friendly relationship with the camera crew in order to keep our slate info in sync and to keep things fun on set. If the camera crew is not used to using slates I get them used to it, and they're usually very thankful for the opportunity to step up their game and become more professional.
Have fun making sound for movies,