Tools/mechanics that I couldn't do without working in the wood in my middle age (well, that's what they call it now when you're in your sixties isn't it?
):
1 - the wheel and everything that runs on them
2 - the inclined plane
3 - the pulley
4 - the lever and associated tools such as a big crowbar
4 - my hi-lift jack
5 - my petrol capstan winch
6 - the electric chainsaw that stops me damaging the tendon in my elbow every time I start the petrol one
However, I agree with Sundowner, these days I have to think about how I load the gear into the ATV and carry it to the work site