I was going to mention Pretty Pink Posh, but the shop is closed for at least a month while the owner focuses on health issues. I didn't know and hope she is doing okay.
So Ellen Hutson is selling PPP sequins in some of the smaller amounts ($3.00), has tons of colors, different sizes, flat and cupped, and is really nice to work with - extremely fast shipping, great CS on the phone:
https://www.ellenhutson.com/Search.h...search=Sequins