For the C-model contest I figured I'd have a shot at doing something with 8049, as of all the sets I have in the parts range, this is one of the few with a useable number of the same wheel type (amongst other reasons). This is just a quick sketch built in LDD, a Logging Loader.
Its functions are:
Pneumatic lifting of the two-stage crane arm
Worm screw operated claw
Crane rotation via the light on the cabin roof
Two-stage steering via the exhaust stack - this articulates the body of the vehicle while simultaneously steering a rack-and-pinion mechanism on the middle axle, so all three axles are at a different angle
Pendular suspension on the rear axle
Working with pneumatics in LDD is a bit of a pain, to put it lightly. I'm not sure about the positioning of those elements as yet on the crane arm, but adjusting them will be easy enough when I build it with bricks. It uses about 400 parts at a rough guess, the pneumatics parts here are made of multiple parts so distort the true part count.