You’ve heard the admonition to take your plastic with you after a picnic. No one likes litter in a forest. What if that piece of plastic in the forest didn’t contain sandwiches and drinks but an entire stage? You can still take it with you, as Berlin-based initiative Plastique Fantastique (www.plastique-fantastique.de) has proved – if you have a big enough truck.

Though it may look like something out of a fairy tale, the gigantic bubble called "Loud Shadows" is actually a concert hall. Tucked away in a Dutch forest, when the gig is over it can be quickly whisked away. The transparent PE and PU skin with two bubbles on either side of an opaque walkable circular tube blurs the line between its interior and the exterior and the natural surroundings, offering verdant views while creating an “intimate space” to enjoy art, song and dance its promoters say.

Plastic “bubbletecture” is enjoying growing popularity. “Spacebuster”, a mobile transparent installation, resides in New York, while the pink “Portavillion” nicknamed “Rosy the Ballerina” tours London. The name of SITBON’s “Grenade” pavilion in Paris – whose bright red plastic “seeds” give off a “burst of colour” when inflated – could be disconcerting, though.