Making Bohr Diagram What Materials Could I Use To Build A Bohr Diagram Of Krypton?

What materials could I use to build a Bohr diagram of Krypton? - making bohr diagram

In science classes, I have a drill chart to the krypton and the minimum value is 30 cm. I'm not sure what materials I use, I tried to wire perches straw .... but none of them remain. Could you help me please!