If you want to speed up your prep time in the kitchen a bit, Instructables user confu suggests attaching a waste container to your cutting board so you can easily slide your rubbish out the way and continue chopping.
The idea and execution here is pretty simple. Take a decent wooden cutting board, a cheap baking pan, some magnets, and combine them all together. The end result is an easily removable waste container where you dump your food scraps as you chop them, which certainly beats throwing those tomato stems onto the floor. Head over to Instructables for the full guide.
Detachable Waste Container for Chopping Board [Instructables]