I noticed a lack of ping pong paddles on Thingiverse, so I decided to fill the gap. I call her "Striped Freedom," even though she looks like a French flag. This has been tested in the heat of battle, and works great as a paddle. Even if you lose your match, the nerd factor of this is so high, your opponent will be too busy gawking to gloat.
This was printed on the high seting with 4 shells and a 20% infill, which gives it a pretty good weight.