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.
It is now about 3 months since I got my 10m QDX-M FT8 transceiver and the Zachtek 200mW WSPR TX. Much to my surprise, I am getting more fun ...