Definitely not my cuppa, for shooting out cereal anyway. If it used black powder and shot mini cannon balls I'd be all for it. But I'm sure there are some of you out there that have a kid in mind that would love, and would drive his/her mother nuts at the same time.
https://www.instructables.com/id/Cereal-Cannon/?utm_source=newsletter&utm_medium=email
https://www.instructables.com/id/Cereal-Cannon/?utm_source=newsletter&utm_medium=email