Boycott styrofoam. Styrofoam (polystyrene) takes about 50 years to decompose, and is not easily recycled (they won't even take it where I live). It's pretty shocking that restaurants and places like Omaha Steaks still use it. Let restaurant managers know that the use of styrofoam is unacceptable.
Don't throw away your tools' rechargeable batteries when they no longer take a charge. Take them to Home Depot where you can drop them off for recycling.
When you receive a package with styrofoam peanuts, don't throw them away. Dump them into a garbage bag and save them for when you need to ship something. Of course, you can also reuse most boxes you get, as well. This is probably one of the easiest and most efficient forms of recycling possible.