I added some singing trees/snowman to my Xmas lights this year (past), my first time with the pixels and I am very lucky I found this site way back in November.
I ordered one with the matrix in his belly but didn't have the pixels to run that this year, it also has a 2/3rd arm position that I didn't use as I felt I was already pushing xyz uphill with trying to learn Xmas lights as it was.