He has not paid someone to fix something since roughly 1998. The dishwasher has been opened up twice. There is a coffee can of screws that are, apparently, all different.
The difficulty is that he does not want tools as a gift, because he already has better ones than you would buy. What works is something that acknowledges the habit rather than trying to equip it.

Under $20
Magnets go on the toolbox and stay there for a decade. That is a better outcome than most gifts manage.
Die-Cut Magnet, I Can Fix It. I Just Need Coffee, Dad Gift Price range: $14.95 through $22.95See it →
Vinyl Sticker, If Dad Can't Fix It, No One Can, Workshop Stamp, Dad Gift Price range: $14.95 through $22.95See it →
Black Coffee Mug, I Can Fix It. I Just Need Coffee, Dad Gift Price range: $20.95 through $23.95See it →The mug and the beanie
Two things he will actually use. The enamel camp mug lives on the bench and survives being knocked off it; the beanie is for the garage in February.
If Dad Can’t Fix It No One Can Black Mug | Funny Dad Gift | Father’s Day Mug | Handyman Mug | Mechanic Gift | Gift for Him Price range: $20.95 through $23.95See it →
Color Inside Coffee Mug, I Fix What You Gave Up On, Dad Gift Price range: $22.95 through $25.95See it →
Enamel Camp Mug, I Can Fix It. I Just Need Coffee, Dad Gift$32.95See it →More of this in Dad Life.
