Classic Examples:
* "I'm reading a book about anti-gravity. It's impossible to put down!" (Playing on "put down" meaning to stop reading and "put down" meaning to physically place something)
* "The lifeguard was a real lifesaver." (Playing on "lifesaver" as a person who saves lives and a type of candy)
* "I used to be a banker, but then I lost interest." (Playing on "interest" as a financial concept and "interest" as a feeling of curiosity)
Other Examples:
* "The weather forecast said there's a 50% chance of rain, but I'm not taking any chances." (Playing on "chance" as a possibility and "chance" as a risk)
* "Time flies like an arrow. Fruit flies like a banana." (Playing on "flies" as verbs and "flies" as a type of insect)
* "I'm glad I'm not a golfer, because I'd be out of my league." (Playing on "league" as a level of competition and "league" as a type of pants)
These are just a few examples! The possibilities are endless when you start playing around with similar-sounding words with different meanings.