I came across a tutorial the other day about making a cuff to hold change for a child. It incorporated lots of velcro and sewing. Then I came across tutorial about making these darling little pouches from the cuffs of men's dress shirts and thought that these two ideas would be great together. I don't profess to be the first person to come up with this idea, but I haven't seen it before.
First, you need a shirt with cuffs. Cut off the cuffs as close to the sewn on cuff as possible.