I've started collecting Coke Points mainly for the coupons they offer, but also for some of the sweepstakes. Some of the cooking ones are nice. I wouldn't mind a brand new Mini Oven, HDtv or Blue Ray player. So here is a breakdown of what gives how many points. Yes, if i find discarded boxes or bottles on the road, i do stop and collect them.

2 litres: 3pts
12 packs : 10 pts
24 packs: 20 pts
20oz bottles, collect 8 and get one free.

I'm mainly collecting for the $1 off coupons off 12 packs, which means each point is like saving 4 cents.