So using standard 12 oz. pop/beer cans that are rinsed and dry I find that the consensus is that it takes from 32-35 cans to make a pound. There seems to be no exact number because there are variances by brand. So now we basically know about how many cans one has to gather together to make a pound a make some money.
The desire to chew on ice may occur for reasons other than a mineral deficiency. Some people may develop pica related to a mental health or emotional problem, such as obsessive-compulsive disorder or stress. Other times, pica occurs because of pregnancy and in people with developmental disabilities.