Sometimes the best plans fizzle. I don't see a thing wrong with saying to
the kids--Hey, I thought this would be fun and would work, but some things
happened that we didn't expect. In fact, I'd cry out in mock horror--OH NO!
Our pumpkins have collapsed. How horrible!
Let's do something that won't take so long to finish. Then make something
that's a sure fire success. Kids can accept that we don't always know
and when they are immersed in something they love, they won't even worry
great pumpkin disaster.
Laugh a lot!