This is the Thunder Badge!
The magnets look great with bright colors
I did 3 color changes. Black -> Yellow -> Orange
I will post a link to the full set when I wrap my head around how I am going to go about printing the Rainbow badge :/
I use 11/16 in ceramic craft magnets. The links to Amazon die here and there as the suppliers bounce around. I like ones with pole dimples and beveled edges. This link will search Amazon for you :P