EDIT: This freebie is now dead.
There's a one-day special where you can get a free Father's Day card from Treat. All you have to do is use code TREATDAD at checkout, send it to yourself and you won't pay a dime. Unless you live in a weird country where a dime is worth nothing and you're forced to hand one over whenever you get something for free. If that's the case, I would suggest moving. I hear San Diego is lovely.
This offer is good for both new and returning customers, so old members won't have to do any shenanigans and waste time creating a new account. You've got until 11:59pm PST tonight to use the code, so don't put it off too long!