If you want to do something a little bit more modern you can get a RTL SDR and recieve ADS-B information.
If you use https://github.com/MalcolmRobb/dump1090
And https://github.com/wiedehopf/tar1090
You can have an at home air radar.
Now in terms of just listening I really enjoy my Quasheng UK-V5. It has really good air band receive.
I am shocked a walkie talkie could receive any air chatter but maybe they used to be AM. I think all of the new ones are FM.