I like to watch music videos or live sports; football(with a round ball) or horse racing.
If I'm playing only one tournament I've also go my guitar at hand to fill in the gaps (I often dream of when pokerstars, or a third party, rollout a Voice Activated Decision input system ... it's a little frustrating to stop playing every 4mins just to fold)
Zoom is brilliant for a big race day. You can 'Sit-Out Next BB' very quickly, watch a race\place a bet, then return to the table and nobody knows you've been away .. no extra blinds to pay.