One of those "helpful hints" pages on the web (or was it an e-mail message?) had a tip that appealed to me. It said that pulling a gabage bag out of a wastebasket is easier if there are air holes in the wastebasket. The flow of air counteracts the vacuum effect at the bottom of the wastebasket.

I tried it and it works. It reduces, but does not eliminate, the vacuum effect. Even so, the ten holes I drilled made enough of a difference to justify the work of drilling.