So, thanks to Janice for spotting and sharing with me the following link to a prayer-of-the-day feature on the BBC Radio 4 site
I thought this piece (by a Dundee chaplain, Rev. Duncan MacLaren) quite nice. Though if allowed one niggle I'd point out that Niggle isn't painting a preexisting Platonic tree. In Tolkien's theology of creativity, Niggle's tree did not exist until he started to paint it.
Still, this, the one-man play currently touring England and Scotland, and the recent publication of LBN as a stand-alone booklet for the first time have all between them raised the profile of Tolkien's little parable: a Good Thing.