buy more games ;)
That's what I've been doing recently. I've been stalking eBay for the old collectibles. Snagging an OCE White Box for $75 has just whetted the appetite ;)
My Tunnels & Trolls collection doesn't have too many holes. T&T 1e is impossible to find (so I'll settle for the reprint). I have Ken St. Andre's personal copy of 2e. I'm still looking for a 3e copy and from 4e on I have multiples and various variants.
So I think Judge's Guild will be my next target :)
Actually, I could target early RuneQuest releases, but I expect the time to do so is when the 2e reprints start hitting the market with the recently successful RQ2 Kickstarter.
I guess I could actually read the stuff I already own, but if I had the time for that I'd be gaming ;)
So, what do you do when you can't game for an extended period of time?