I recently purchased some new landscape solar lights for our home. I love that I could easily twist the top off of the stakes and have an instant source of light. I would have to make sure that the solar panels were cleared of snow during the day to make this work during the winter. Some landscape lights are fully attached to their stakes and would have to be fully removed - but it would still work.
I wish I could remember the blog where I originally read this idea. If this personal account came from you, please send the link and I'll give credit where credit is due.