Many times, when I do extra stuff, I just enter it in the notes for that resource. So, from our recent past, we read a book about volcanoes, and did the classic baking soda/vinegar experiment. Alongside the book, I just typed a note: Baking soda volcano. In reports, you can bring up those notes, and see when you did them.
Another thing I will do is put fun activities in the notes at the top of the page for the day: “Field trip to the museum to see volcanic rocks, play with wax volcano, look at tsunami exhibit.”
If it’s a game you want to play over again, you can add it in as a new resource.
Does that help at all?
BTW, I love the bird part game idea, and since we’re doing birds now, would your daughter mind if I use her idea?