Here's a challenge I posted for the lads at work:
Model a hyperbolic, paraboloid-shaped, stack-able potato chip. AKA a Pringle.
I don’t have a chip to reference for dimensions. Instead I found this site that measured some chips for a project: https://www.slideshare.net/brauer3047/pringles-2
Slide 17: 2.5” long, 1.5” wide, .75” tall, 1/16 thick
How It’s Made has a short video showing the manufacturing process. It won’t help you with this challenge but who doesn’t love a reason to watch How It’s Made?
Here’s a stack of twenty of my chips: