It's been a while since I took any, but I think our local scrapyard gives about 40 - 45¢ a pound for aluminum cans. (I could be off on that number). Since I converted my beverage drinking almost exclusively to water a few years back, I generate very little aluminum cans. But I'm also walking daily and around town I started noticing so many discarded cans laying around. Just about the time that Earth Day hit - it struck me that there was money in those cans that I walk past on a daily basis. So I started walking with a pocket full of plastic grocery bags (like Mizzkizz7 commented, I use them primarily to clean out the cat's litter box). But now that I carry bags in my pocket, I rarely go out walking when I don't come back with a minimum of 4 or 5 cans and often a full bag or two.
I look at it like doing the absolute minimum daily bit on FC = it's very minimal on a daily basis, but over time I will have enough to make it worthwhile to cash out. And I'm doing a small part to clean up in the process. I live in a densely populated area with a heck of a lot of litterbugs within a square mile or two radius - so the 'supply' [unfortunately] is always going to be there. Even if I forget my bags, I make a mental note of the neighborhood I'm walking through when I see any cans. They are always still there tomorrow and many times there are more. And after I've picked a particular few blocks clean - lo and behold, I have a fresh new supply the following week in the same location!
I have an area in my garage where I can afford to toss my small bags and with the help of my trusty sledge hammer, they flatten down pretty nicely once I've accumulated enough to be worth the time to smash them.
So I figure I am putting my excess plastic bags to some good use - even if they do ultimately end up in the trash...