After writing this, and having done some daily practice this morning, I turned to the question of music to use for this challenge.
In the end, because I have Pianist Magazine membership and access to everything going back to around 2010, I went through their scores and picked out 40 pieces, mostly beginner pieces, and I dropped them into a spreadsheet. If I already had the sheet music (there are a couple of pieces from the Notebook for Anna Magdalena Bach, for example), I noted that instead of the magazine as a source. Most of the pieces are beginner pieces, there are a couple of Beginner/Intermediate and a couple of Intermediate pieces. Most are not rearrangements and the vast majority are one pagers.
What does all this mean? Well on the days I get to practice, fifteen minutes are going to this challenge. I may occasionally vlog these things but I am not sure yet and there is still a lot of work to be done in terms of prepping the vlog anyway.