I'm sorry Joel, but Trello, is still bitch work... I still use pen and paper, and works great!
Also, Trello is really easy to just close, a paper you'll have to hide it manually, going analog sometimes is good.
Funny I find I have the exact opposite 'problem'. Trello is always there on my bookmark bar on every computer I own, one click away from viewing anywhere I happen to be. On the other hand I tend to lose any paper to do list I make, and even when I don't lose them, half the time they're not where I happen to be.
Still wondering where org mode fits.