I sent a client a singing telegram to get them to pay up
This graphic design firm in Phoenix owed me $1200 and was ignoring my emails for two months. I hired a guy in a chicken costume to show up at their office and sing a custom song about paying invoices. The owner called me laughing and paid the same day. Has anyone else tried something totally weird that actually worked?
Honestly, that glitter bomb idea from @max716 is pretty classic. Tbh, my old boss once had a local pizza place deliver 50 empty boxes to a non-paying client's lobby with "PAY UP" written in sharpie on the inside. It was a total mess but it worked.