Converting a List of strings to a SelectList

I had a brief list of comma-separated strings that I was storing in the web.config file, and I needed to convert them into a SelectList to bind to a DropDownListFor control in MVC. For that, there was a very simple method:

TempData["FundingTypes"] = new SelectList(ConfigurationManager.AppSettings["CoasterTypes"]
     .Split(',').ToList());

If I had needed a List<SelectListItem> instead, I would have done this:

            TempData["FundingTypes"] = ConfigurationManager.AppSettings["CoasterTypes"]
                .Split(',')
                .Select(f => new SelectListItem() {
                    Text = f.ToString(),
                    Value = f.ToString()
                }).ToList();
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