Redbox is a good idea, and I reached out to them a few months ago to see about getting a rental box on my property. I haven't heard back from them so I'll keep trying until they tell me know. On their website they are looking for high traffic flow, such as a grocery store or their parent company McDonalds.
I like the washer fluid idea, and watched the forum on the discussion about it over the past year. Those of you who have put it in, are you glad you did it? Or is it more of a headache than anything?