[Question] Looking for more ‘PlayPumps’ like examples

Hello, my organisation is looking for case studies of ineffective interventions (similar to PlayPumps). I have found tracking down these case studies a little tricky so far but I am sure that there are many similar programs that I am yet to stumble across. This is for an intro to EA text that we are writing for a Christian audience.

Do you have any suggestions that are ideally

  • Implemented by charities

  • Working in global health/​poverty alleviation

  • Ended up being harmful (or at least negligible impact) Bonus points for

  • Well known/​easily googleable

  • Clearly well-intentioned and programme implemented successfully (lack of impact was not due to corruption or similar)

Examples so far that we have thought about

  • Microcredit (not harmful, just less impact than expected by the global health community, but still a pretty good example)

  • Tom’s shoes (this is the most similar to what we are looking for, thanks to Jack Lewars for suggesting this)

  • Guide dogs vs cataract surgery (not really a failure of a programme just a difference in priorities)

  • Scared straight (not in global health/​poverty alleviation)

If there is already a post like that please do link it below, I did have a quick look and expect that a list like that has been written somewhere already.

Thanks for your help!