https://www.amazon.com/Clear-Glass-Accessory-Bubble-2PACK/dp/B091ZBNX6W/ref=mp_s_a_1_6?crid=Y4G1KDJJKD6X&keywords=puffco+ball+cap+glass&qid=1667390472&qu=eyJxc2MiOiIwLjAwIiwicXNhIjoiMC4wMCIsInFzcCI6IjAuMDAifQ%3D%3D&sprefix=puffco+ball+cap+glass%2Caps%2C898&sr=8-6
I got these for a device kinda like the Puffco and they seem to be the same for pretty cheap from Amazon i have them they’re not bad at all.