You
can also tape down 2 oz portion cups
inside the Dixie cup in instead of sno cone cups. Don't limit
yourself to just water. Maybe add some orange juice or cranberry
for color?
You can also make chocolate shot glasses
this way as well. And why not make some rubbery jello
shot glasses? Just use less water so that they will
cure sturdy.
There are directions for the chocolate shot glasses
here.