Don't keep your floppies in a fireproof box
A business software developer customer of mine bought an 80 MB QIC24 backup drive for $3000 from me. He tried to sell it to his client who owned an asphalt plant, but the guy thought that his backup floppies were all he needed. So my customer went and demo-ed it to his client anyway, because he had spent some time there developing and there weren't any compatible media to take his work home with. In this case 'demoing' meant a full image backup.
A few days later, the asphalt plant burned down. The heat was to intense that the only recognisable thing left was the Faraday shield around one of the VT100 terminals.
The client proudly went to his fireproof box to get his backups, and found them all melted! Fireproof boxes do not double as Thermos flasks!
Naturally, with the client having $250,000 in receivables to collect from his general contractor clients, my customer made a killing selling him his own data back!