Custom-sized thimble

DIY

• From PCL plastic
• Leather thimble [1]
  • Use a baseball stitch
  • For leather, this suggests using cowhide split leather in a 3-4 oz weight.

Make a kit

• Ugly thimble [▶]

Order online

• https://www.etsy.com/market/custom_thimble
• https://thimblesforyou.com/ — Impressive, but out of my budget.