For obvious reasons I'd get myself some dental implants done. It's ironic because I actively cost the NHS like 2 - 3 grand every 2 - 3 years at present and they won't fund the dental implant surgery even though over the course of an average human life span it'll save them in the region of a good hundred grand.

Beyond my teeth the only thing I'd truly consider is perhaps hair removal for some of the huge amount of hair my body has.