I believe this book is from the 60’s or 70’s. I read it around 1993 so it certainly is earlier than that. The illustrations have simple cheerful pen/line work. My recollection of the plot is a kid puts money in a gumball machine and is granted wishes genie style and/or it releases a cherub who just decides to make fun things happen. There may or may not be three gumballs. At one point kids are skipping with a very long piece of licorice or some other candy.
I recall the flying cherub is just a white body (as white as the page) with a black outline. He may or may not have curly hair. I also think that the page backgrounds are all white. The illustrations do have colors though, but there is not much visual texture – it is very flat with black line outlines on everything.
That is all have. I read this book only once and have been collecting picture books for years now and have never seen anything even close. Thank you so much! I’d be thrilled to find it.