When I'm bored at home and think I have nothing to do I usually do find something that needs done that I've been putting off for awhile, such as dusting the house, organizing my closet and going around and sorting through things that I no longer need and either donating or getting rid of the stuff I don't need or use anymore.
On nice days I go out and do yard work or other things that need done outside or I even garden and plant flowers and vegetables.
Going for a walk or a nice bike ride is a good thing to do when you get bored and it's good exercise as well.
I also go through my email inbox and delete any emails in the spam folder or go through my emails that I no longer need and delete them and clean out my inbox.