My favourite bits of kit, like my Bison Bushcrafter variant, Cegga hatchet, stratosphere bivvi etc might not get onto everyones' lists because others may have a favourite knife, axe or bivvi for different reasons. But in terms of items which serve me better than other similar items I've tried, I'd have to suggest:
My Kochanski Billy - non stick, extremely durable and the pouring spout and side handles (as well as a bail arm) provide a better level of versatility than anything else I've used.
My Silky Gomtaro saw - unbelievable performance surpasses anything else (IMHO of course)
My Bushbuddy stove - excellent burning function coupled with the flexibility to use with either wood or a maths burner