Many people get lots of fun from web SDRs experiencing amateur radio in various locations around the planet. Although I have yet to try it, you can also make your own SDR into a webSDR so others can use it too I believe.
See https://ubersdr.org/ .
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
See https://ubersdr.org/ .
The 200mW beacon was turned on at about 1900z. UPDATE 1948z: Many spots of me by EA8BFK (2880km). At the peak I had about 28dB in hand!