I've found a few options.
You could make a scary Halloween costume.
And for you crafty people...
you could make a plastic bag wreath.
or plastic bag shoes.
or a stylish plastic bag bag.
And the option I'll most likely do...
Take my bags to Walmart, where they are collecting bags to recycle them.
How awesome is that?! Sometimes I don't like Walmart, but today...
... I kinda like them.