In a couple of years they will be grown up and "flown the nest".
We think these days will last forever, but know they will not.
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.
My 500mW stand-alone 10m WSPR beacon has been on since this afternoon. So far, 13 stations have spotted me.