These: https://amzn.to/3FoGFQQ which I have mounted in my 20x20 dog pen. They light the whole thing up brightly, and I've tested them after about 11 hours and they were still bright. I also have these on my fence lining my driveway. https://amzn.to/3tskRRQ
Took me forever to find this again. http://support.microsoft.com/kb/906305 Originally I had a software vendor clue me into this registry key. It's the reason why you change your password, your old one still works for 60 minutes.