Vep....take a small piece of paper and put it under your mouse...also add 2 toothpicks to set mouse on, one at each end..they keep the mouse just above the paper....get a small fan and have it blow on the paper...turn mouse/paper a bit at a time til your cursor starts to move...even if its just a tad(which is better). As long as your cursor is moving, you wont go AFK....check it every now and then..beats hitting the spacebar

Turn up your sound and go to sleep!!!!
Cheers and good luck to you....