If I had an iPhone to put a case around, I’d probably get a huge solid-steel one like this one, but since those cost $200 I might settle for a cute Mac Classic sleeve. It’s slightly sold-out, unfortunately, but you might bookmark it for later in case Etsy maker vanMourik decides to pop out a few more.
He (she?) has actually made an announcement on that front:
Hi! The iPhone Classic Mac case sold out very quickly on July 7th. There will be a few more available in a week or so, but then no more. If you would like to be notified when they are posted, send me a message. Thanks!!!
I’m not sure how much it costs, but you’ll get back every dollar you spend… in smiles!