I'm Looking For Suggestions On Earning Money For Coins.

Each can or bottle can be redeemed for 5 cents.

That definitely sucks. I don't really have any other ideas, except to always save your money and maybe occasionally sell a coin in your collection you don't need.

its like a company that comes with the neighborhood

Older people need help doing simple things, too - offer to come around every Wednesday (or whenever trash day is) and move their trash cans to the curb, then come back later to put them back. Offer to ride your bike to the store (if it's close and you're allowed) to get them the gallon of milk they forgot (give them your phone number - you can be on call!). Weeds need pulled in their yard? Rocks and sticks out of the lawn (that's an annoying one here), washing & detailing vehicles, power-spraying sides of homes/driveways/sidewalks, offer to do any/all these things on a rotating basis.

Also, a lot of older people live in mobile home parks, and some are still required to take care of their own front/side yards and would probably LOVE to pay a youngster to do it.

Just be responsible - show up when you say you will, do a better job than you think they're looking for, smile, and be so honest they'll imagine a halo over your head. That's where you get word-of-mouth business ("Hey, this great kid is taking care of my lawn - you want him to come do yours, too?") - and next year they'll be calling you to come back

haha this is soooo bad. But when I was 12 (not that long ago!) I sold soda at school and earned enough money to splurge over summer.

cans are still aluminum and can be taken to scrap yards. you wont get 5¢ or 10¢ a can but you will pry get 1-3¢ each. also check craigslist free section and get any free scrap metal you can get and take it to the scrap yard. ex washers, dryers you'll get $20 or so for each. and metal is worth money at a scrap yard

The common denominator here would seem to be instant or near instant gratification. There are ways of making money even in today's economy most require some form of initial investment.
Such as the Gumball Machine idea. The very first thing you have to do is "stop spending". Its as simple as that. Any money that comes in needs to be saved until it can generate a return.
My 10 year old neighbor washes cars on the weekend sometimes with his younger brother in tow. His dad put a flyer up at the local wallmart and from what I can tell he does 5 or 6 cars in the sub division. (not mine I'm too cheap) He saved money for a long time before he even had enough to buy the bucket sponge and other materials. Does he make a lot of money not really people use him because 1. He does a good job. 2. He is cheap $3 for a car and $4 for a truck. 3. He is polite. So on a given weekend he will make between $15 and $20 about half of which will go back into materials. Not a lot of money but over the year he will make around $400. I have not asked him what he does with the money but he does not strike me as the kind of kid who would spend it on candy and such. I am not advocating car washing I am just pointing out that you can make money but in most cases if you don't stop spending first then you will never get to the point where you can make your own money.