Probably not, but [Erick Truter] — inspired by a forum post and a few suggestions later — turned a classic modem into a 3G Wi-Fi hotspot with the ubiquitous Raspberry Pi Zero. Sourcing an old ...
Of course, if you’re more about the look than the underlying technology, you could always just put a WiFi access point into the case of an old analog modem. [Thanks to Boofdas for the tip.] ...