Macworld I currently use an Apple Watch Series 4 and I’m probably going to upgrade to whatever new watch Apple releases this fall. But rather than sell it for pennies on the dollar, I’ve been looking for something to do with the Series 4 besides stashing it in my drawer next to my original Apple Watch–after all, it works fine, it’s just missing some newer sensors and features. And I think I found a way to put it to good use. The tinyPod is a case that essentially turns the Apple Watch into a standalone gadget that looks like, well, a tiny iPod. Pop an Apple Watch body into the silicon sleeve a…