This is one of my favorite strategies to get children to talk. Sabotage sets up the need for a request. Here is a scenario from a parent/child interaction that I witnessed:
Parent: “Here you go” (takes the lid off and starts blowing)
Child: (quietly pops bubbles)
I explained sabotage to Mom and here is what she did:
Parent: “Here you go” (gives the container, lid intact, to the child)
Child: Looks at Mom then hands her the bottle and says “open”
Parent: Mom opens the bottle.
Child: Tries to blow bubbles. After about 5 minutes of trying, she gives up and says to Mom: “Bubbles”.
Parent: “Blow bubbles?”
With a little patience and “sabotage” the interaction was longer, the child initiated more, and used more words to get her needs met.