Ed's Peek into the Future was a scam featured in "Don't Rain on My Ed." First, Eddy would attract customers, then he would direct them to Edd, the guide, who in turn would show them around the facility, and later a machine operated by Ed.
This scam was what the Eds' prediction of what the future would be like, with stereotypical futuristic "machines" with many different purposes, such as the Feed-Wipe-n'-Wash machine, operated by Ed behind a large piece of cardboard, and "TV shoes" which seemed ridiculous to Jonny, but Edd explains that "[he] didn't say the future was practical."
Jonny 2x4 and Plank were the only customers the Eds had before they abandoned it after hearing about Customer Appreciation Day at the candy store from Nazz. This is one of the few scams that can be considered to have worked without giving back refunds.
It was partially destroyed by Ed after he was told to clean up the mess by Sarah, as the scam was located in Ed's garage.