I just lay in bed, scroll through tumblr on my tablet, watch youtube, play ACNL to pass the time and drink a lot of water and warm fluids. I sleep like a rock whenever I'm sick so I don't have much time to do anything once I try to 'heal' myself.
I also read books and check forums and just try to relax
Usually I just sit curled up in the tub all day with the shower running because I hate being stuffed up. Or eat spicy food because it's nice to actually be able to taste something, aha (plus I love spicy food anyways so win-win).
Otherwise I read and watch movies. Sometimes video games but I usually don't really have the motivation usually.
At the height of my colds it is nearly impossible for me to even fall asleep, and also pretty much impossible to distract myself. My sinuses get so stopped up these days, and I'm a nose-breather. I feel like I can't breathe at times and it's absolutely miserable.
When I'm sick I like to have baths and light all my candles, turn the lights out. Watch some Gossip Girl or morning talk shows and sip on chai and green tea. I really don't distract myself, I kind of just embrace the good things that come with being sick.. Rest and time alone!
If I'm really sick I become a champion napper and play games and stuff. If it's less serious and I just have a little cold or something I just take medicine and suck it up and go on about my day haha.