Just fold it up and stick it in your garage until your recycling bin has space. Maybe dispose of a few boxes per fortnight. Heh, you should've seen what I was doing in 2005 when I decided to do a MASSIVE box purge. From 1997 until then I'd never thrown a TF box away and after eight years they were just wasting too much space. So I had this mountain of TF boxes sitting in the back of my driveway for months as I gradually turfed them out! Nearly a year later when I was moving out, I just took what was left to a waste management facility. Ho boy... that was hectic. Even now I have a small collection of TF boxes sitting in my garage (no space in my TF room)... and that's despite the fact that since 2005 I do chuck out most of my TF boxes - only keep the ones that I like. I just happen to like a lot of them (I can't bring myself to chuck out any of my eHobby TF boxes despite their generic design... weird, no?).