I wanted to flag this neat series of blog posts from the Smithsonian National Air & Space Museum on the history and significance of the Lippisch DM1 delta-wing research glider. I have always like this configuration and thought that a powered homebuilt along these lines would be good fun.
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-1
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-2
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-3
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-4
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-1
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-2
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-3
https://airandspace.si.edu/stories/editorial/lippisch-dm-1-reconsidered-part-4