More round robin ATCs - these are ones where I was the second person to work on a card. I get a background/starter and then add something and send it to someone else. Sometimes the backgrounds are pretty free-form, like this one:
I added a slice of blood orange; it seemed perfect.
Sometimes there's more to the card already, like these butterflies, so the direction to take seems more obvious.
With these I thought I didn't want to add too much, as I wanted to leave space for the third person to do something with them, so I only added a couple of stripes of tape.