So I'm thinking of building a chocolate dispenser that dispenses chocolates of various size. From a bar chocolate to small gummy bears. It should dispense one per day. Also I want it to dispense a total of 30 chocolates. So a refill would be every month.
Please give your suggestions on how I could tackle the the release mechanism. Thank You XD 
Take a look at existing machines for inspiration. The ones in my office use a horizontal helix with the vending items sitting in the coils. When you purchase one, the helix turns until the next item falls off the end down to the area where you can grab it.
You'll have to have standardized size of chocolates (or as few different types as possible) since machines capable of dealing with items of unexpectable sizes tend to be expensive.
I think something of this design would be reasonable cheap while effective.
(MS Pain skill lvl 9000, I know)
As for gummy bears? I have no idea, but whatever you decide on, wouldn't it get all gooey and sticky and yucky after continuous gummy bear handling? I don't think I'd like to eat those gummy bears if I saw the dirty dispenser. (Or maybe I would... I'm like a crackhead on withdrawal when those thing are nearby).