This will go down on my permanent record...

Station 11 is pretty good.
Wool series are also good.

 

My current book is #4 in the series, and each one is about 18.5 hours.

 

I so want to build one. Not some little thing either. Like big enough to give a piano a good fling.

 

I threatened to build one to launch water balloons at the neighbor across the street.

 

Need to be careful with those. Wear them too long and you could end up with Barbie feet.

 

Way back when (early '80s) had a coworker that used to always have on ankle and wrist weights as a way to get toned up and build muscle stamina.

Said it helped him a bunch doing local basketball tournaments.