How Do You Manage Your Errands?

For me, personally, the time that it takes for me to assign something a prior the pay off really isn't there for me. So if there's not a hard due date on it, it just goes on that list and i get to it when i'm processing. You use an iphone or something, some equivalent thing, so you've got your list with you. Otherwise, or print them out. How do you manage? Or is your just computer just so ubiquitously available you don't bother? I do have an iph phone. Right now, take your tados with you.