I tattooed a set of checkboxes on my hand 2 years ago to help me get shit done
old.reddit.com
old.reddit.com
I personally don't understand the obsession with getting things done. In the post, they say the tattoo remind them that there's always things to get done. I don't think that's a good way to think. If you don't rest, you can burn out, and then you can't get anything done.
But hey, whatever works for you. Tattoos are personal and symbolic. I get that.
And checklists are great tools - I can personally attest.