Old Cellphones ($500 – $10,000)

For us humans, communication is a vital part of our lives. But, of course, animals don’t use cellphones like we do, which is a handheld wireless receiver. The first cellular phone was available from Motorola in 1983, but AT&T created the first version of a mobile, voice-based, two-way mobile phone.

Fast forward to today, mobile phones are becoming even more packed with technology, but that doesn’t mean your old cell phones are worthless. You’re in for a big surprise! These outdated devices can fetch you thousands of dollars. If you happen to have an original Motorola DynaTAC, you should know that it can sell for $500 on eBay. Oh, and if it’s in its original packaging, it can sell for a whopping $10,000—not bad for investment planning.