A new phone usually means a new case. Over the past few years I have tried some different styles, including top-opening sleeve and book style. But although I've been working again for several months, I'm still trying to be careful with money, and spending another $40 or $50 for a new iPhone case may not be the most prudent move, at least not yet.
I decided to take an economical approach this time. I happened to follow a link to an eBay seller offering silicone slip-on sleeves for $1.50 (that's not a typo) with free shipping. They even offer a choice of five or six colors. I was going to get clear but since my phone is black and gray I decided to get a gray-tinted sleeve. It isn't super-snug but it offers at least a minimum of protection, and makes the phone easier to grip (the aluminum body of the iPhone can be somewhat slippery).
I may decide to upgrade the case at some point in the future, possibly to something in a similar style but done in leather. But for now this one will do.