They are a cascade of knitted butterflies and flowers.
Someone has done a lot of work creating these.
I suspect it is part of the jubilee celebrations over the weekend.
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 gear is on 8m (40.680) FT8 RX. I know activity is way down on 6m. UPDATE 1711z: No spots. I suspect people are on 6m, 4m and 2m Es.