I'm not a big fan of prepackaged convenience food. There's more of it in my freezer than I'd like, including a stack of Lean Cuisines for quick grown-up lunches, but most of the time I don't like what I'm sacrificing -- often taste and nutrition -- when I go the fast and easy route.
But I do try to keep my freezer well-stocked with homemade convenience foods: cut-up chicken for stir-fries, caramelized onions and roasted garlic for in-a-flash flavor boosts, cubes of lemon and lime juice, and of course leftovers. My freezer is perhaps too well-stocked -- every few months I throw away far too much that has been ruined by freezer burn. And the wasted money and effort I'm pouring down the garbage disposal especially burns.
WikiHow offers a good guide to protecting your stash from freezer burn. I already use some of the tricks suggested, like using a straw to suck the air out of packaged foods, but there are plenty of tips here that will help me waste less.
How to Prevent Freezer Burn, via Lifehacker