let (someone) off the hook
to excuse someone from a penalty or a promise
My boss let me off the hook and I did not have to stay after work and help clean the office.
Innovative Products Ideas
Posture correcting chair
A chair with sensors at appropriate places, which alerts the user sitting in a wrong posture. Both conceived this idea independently after being regularly scolded by their mothers for using a bad posture. Little Kulsoom thought that while it may not be possible to be reminded again and again by someone for not sitting properly, this task can be done by the chair itself. She likes gardening, arts and crafts, writing stories and poems. Infact she plans to get her own book published soon and grow up to become an entrepreneur selling hi tech machines in an automated shop.