We've discussed wrapping tin cans in things like rope, but what about going the extra mile for that rustic feel by covering an everyday tin can in sticks? You can either go to your local craft store for nature's imitation or scavenge your local park for sticks yourself. Then, simply hot glue them around the tin can. While you probably want your sticks to be similar in size, they don't have to be the exact same.
Having the sticks' heights vary slightly adds to the rustic and natural look of the vase. Now, you can use it for anything from flowers to planters.