All kinds of nifty things that you never knew existed. Next time your MIL comes to visit, have your double barrelled fork ready. 
Or maybe you’d rather escape from her on a rocket powered bicycle. You could always beat the high cost of gas and build yourself an ammonia powered car! And who needs a 64-bit PC when you’ve got a mechanical computer?
I was just about to go to bed after having been up all night studying for an exam tomorrow morning…then you go and post this!
For a mechanical computer, check out this page.