I saw this deisgn, would like to build rectangular not circular. Are there options for this on Sparkfun? https://www.youtube.com/watch?v=o-k9YsGg2tI
Not really, the closest thing we have is SparkFun Qwiic LED Stick - APA102C - SparkFun Electronics which you could arrange into a rectangle, or use strips instead LED RGB Strip - Bare (1m) - SparkFun Electronics