Get a cheap Personal Trainer: Walking without walking too far

If you hope to save all of your footsteps for entry into Personal Trainer: Walking -- really make them count by having them tabulated by a video game -- this Amazon deal is perfect for you. The game, with two Activity Meters, is Amazon's Deal of the Day for $29.98.

You may have to do some uncounted walking to pick it up (trips to the mailbox or the front door, a small amount of day-to-day movement until it arrives), but at least you don't have to walk around a store to pick it up, dooming yourself to several steps that don't contribute to a running total on your DS.