Use the last word on the post before yours and add one more word for a two-word phrase. Like this:
lights out .......
out classed
Quarters portions
portions control
control freak
Freak out
Out house
house built
Built Legos
Legos creation
Creation contest
contest winner
winner declared
Declared candidate
candidate announced
announced winner
winner powerball
Powerball ticket
Ticket punched
Punched holes
holes mended
mended friendship
friendship rocks
rocks list
Listing expired
expired coupon
coupon book