I can honestly say, I am jealous. I wish I could make things from balloons like that. You would be popular with children and with the ladies. I could use it all the time.
Quickly make a balloon heart and hold it out "I just wanted to tell you, the moment I saw you, you stole a piece of my heart, I just wanted you to have it".
Or, make a half heart, "Hi, uhh, yah, I was just looking for the other half of this and I was wondering if you could help me".
Or, just blow one up all the way, walk over and point at it, "Its kinda like this"