Zena, of West Art & Glass, handcrafts a variety of glass items in her UK flat. I spotted this delightful shallow bowl, which features the number pi spiraling out to 1,498 places in her Etsy shop. I don’t consider myself a math geek, but I do appreciate pi and think it would be a fun way to serve and eat the other kind of pie.

• Geeky Pi Bowl
• West Art & Glass