A few more, based on replies and other input sources:

#GetFediHired if you have a job opening to share
#SilentSunday to give readers and followers an opportunity to breathe and relax
#CarryShitOlympics where people share how much stuff they can transport with their bicycles
#BloomScrolling Flowerpower for your timeline

There are many more so do read the replies and add more things that help you have a good and inspiring timeline in your Fediverse :)

2/2

No pics, but I also managed a #CarryShitOlympics entry today.

I told someone on buy nothing that I could pick up a couple of pillows. And I forgot I had the bike with me that didn't have a rear rack. They turned out to be quite large and fluffy. I managed to get one of them through my messenger bag by extending the connectors between the flap and the bag all of the way (not great for the bag, but it survived) and the other bungeeded to the top of the basket* on the front of the bike. Oh and did I mention I had to pick up flat rate boxes from USPS first, so there were a stack of them already balanced on top of the basket.

Standard wald basket, not one of those big flat monstrosities that look like they can take a whole pizza or something.

#BikeTooter