https://www.ironplanet.com/ good place for farm equipment sales.
ebay for best online auction prices
https://www.alibaba.com for larger or harder to find items including larger specialy machinery. i have not used this site much but it does have a feedback system in place.
The Bees Knees
- Flow Hive – a way to easily extract honey from a hive. it has alot of plastic in it so be weary of location to keep honey cleaner.
- Homemade Bee boxes –
- cattle xray machine for preg checking
- magnetic fencing pliers for getting removing staples from fence posts.
- conductive horse blanket with possibly with Aracon kevlar based fabric to conduct heat away from horses back. could also just use metal wires and vertical tubes on the bottom that use convection to cool them.
- more humain way of killing pigs than sludge hammers, using electro shock or putting them to sleep / knocking them out first.
- diy guillotine for farmers. would work well for goats , hogs or larger animals.
automatic bail feeding machine for cattle
automatic bail feeding machine for horses and other animals. could use fewer bails , would run on 5hp electric motor could bust bails using side or front mount.
see the shock collars page for conditioning/steering animals with gps.