Assistive Technology Adapted Dice Roller

A switch enabled assembly that I am working on to enable people with limited abilities to "throw" some dice. Still a work in progress, current BOM:

Part Cost Source Details
Clear Plastic Cup Free recycle can ;) Need lip diameter for base flange
Base $1.59 3d print (53 grams) For flange diameter of dixie cup
Rotating Disc $0.57 3d print (19 grams) For flange diameter of dixie cup
Battery Holder $0.40 https://www.amazon.com/TrendBox-Battery-Plastic-Storage-Container/dp/B0713MJ76K/ref=sr_1_2