That's a fun question. I think the answer is
Yes. You need to figure out how to get the gas
from the reaction into a balloon - maybe you could
put the baking soda and vinegar into a small soda
bottle and try to get the balloon on the top fast.
But you might not get enough pressure to stretch
out the balloon, depending on how much baking soda
and vinegar you used and how tightly the balloon
was attached to the soda bottle.