i, too, have thought about it recently. something to mark a change. i even have a design in mind. and i'd put it on my upper arm - where it could be seen - but not all the time and not too big.
my wife and kids and boss and friends and co-workers would all be totally shocked. they would all think it was completely out of character. maybe that's a good reason to do it! like saying - you don't know as much about me as you think.
We are often troubled, but not crushed;
sometimes in doubt, but never in despair;
there are many enemies, but we are never without a friend;
and though badly hurt at times, we are not destroyed.
- Paul, II Cor 4:8-9