Country Living magazine has a great nine-page spread in its April issue out now devoted to what it calls Heavenly Hideaways. It covers treehouses, 'rustic retro residences' such as Airstream trailers, summerhouses - including the shedworking soft furnishings specialist Jeanne Lainé - and follies. Lots of familiar namechecks but one or two new ones too. Excellent photos and well worth a browse.
Thanks to Garden Monkey and the other person whose name I've rudely forgotten for the alert