A portable hay moisture tester can help if you bale your own hay. It accurately measures moisture content and temperature, which can be crucial.
A stonemason's hammer is used for breaking and shaping rock, brick and other hard materials. I didn't realize I needed one until I found a used one for $1.
A portable sawmill can be worth the investment. It can provide a source of wood for your own projects and give you a side business.
Most tractors include a toolbox. Here are some common tools compact and versatile enough to keep you ready for various jobs you might encounter.
