I am lucky enough to get my hands on a Realistic TRC-86, the walkie talkie they used in the series. Not sure if it works but just to have as display is
ARE THESE THE NICEST SOUNDING WALKIE TALKIES EVER MADE? THE REALISTIC TRC-1006 - YouTube
My collection of Stranger Things walkie talkies :) 4x TRC-214 (Mike's model) and 1x TRC-206 (Lucas' model) : r/StrangerThings
File:Realistic and RadioShack TRC-222.jpg - Wikimedia Commons