Our house has a large double sided fireplace right in the middle of it. It has a vent above the doors on either side to circulate the hot air, which is not all that effective. I wondered if it would help to have air forced across the firebox and decided to try an experiment. I rigged up a window fan to blow air into the vent in one room.
What do you do when you have a pretty comfortable swivel chair but want to move it around like an office chair? You bulid a six wheel flatbed trailer for it.
That was my first attempt at electrifying a gas mower. I used a 2 HP induction motor attached to a mount designed to be a drop in replacement for the engine. The first version used the frame from a Troy Bilt front wheel drive mower. This one only had a single speed transmission and couldn't handle the added weight from the motor. I think I used it for one season before replacing it with Version 2.
If you want to buy a new lawn mower, you can go down to your local big box retailer and find that most of the available options are probably battery electric mowers.
I just noticed this community in the "Trending" box on my home page. I love the premise, and am looking forward to seeing what people post. I'll try to remember to post as well, if I do any interesting DIY projects.