Hopefully I can help shed some light on what has worked for us.

First, we use materials that are cutting edge and interesting. Some are actually shot on site and very specific to the actual workplace and lifts, including filming past near misses and views from the lift operators perspective. We also try to mix things up with not only serious issues but also humor.

Second, I highly recommend the forklift skills challenge (some call them rodeos) as a positive motivator. When properly set up they reinforce safe behavior and also promote efficiency. When done wrong they just promote speed, which is not what you want. Setting up real life simulations and getting enough qualified people to judge and enough good safe equipment to operate can be an issue. Our teams come back year after year and the operators love it and talk about it all year.

Third, if you really want safe operations then consider linking your supervisors pay or bonus' to their employees safety performances over the year. When the pay is on the line they will do the right things.

Forth, awards are fine if they are only given to the top people. If everyone gets one, including the guy that hit the buidling column, then people won't find value in them or want them.

Forklift systems such as the ones mentioned are fine but should not take the place of the things you are looking to do, but rather supplement them after the fact. You are headed in the right direction. Good luck!