Cermetek CH1786A 2400 bps Modem Module
Back in the day we didn’t have IoT or the Internet! We have to dial in to another computer system via modem. These embedded modem modules have been sitting in a parts drawer for years! I haven’t had a land-line in a long time or I’d find a use for them. These are a somewhat rare item these days. Especially at this price! See description below for complete product details.
EB500 Bluetooth Modules (Set of 2)
I found one set of these classic Bluetooth Adapters originally designed for the BASIC Stamp 2 and having an AppMod header to connect to any development board with the appropriate socket. Not tested, but should be working. See description below for complete details.