A toy car – in fact, a mobile home with comically enormous antenna on top – shudders over arms and shoulders as if they were mountain ranges. A colossal polar bear comforts its curious cub. A lifesize puppet grandmother is chased up and down stairs by her over-enthusiastic stairlift.

"I feel I owe you an explanation." That much James Thierrée concedes partway through his sprawling, freewheeling, dream-like, hallucinatory Room in Edinburgh’s King’s Theatre. By which stage, most of the audience was probably in agreement. It’s a proposal he comes back to again and again during the rest of the show – but, of course, no explanation ever materialises, save a few strangulated noises, which seem about the best Thierrée can manage.

You never forget your first Gecko production. I experienced mine almost 20 years ago at the Battersea Arts Centre, when the company performed Tailors’ Dummies, its ingenious surreal show about obsession. This had all the hallmarks that would make Gecko one of our most distinctive physical theatre companies; gravity-defying choreography, a quasi-acrobatic exploration of concepts of the body, and scenes that were as elliptical as they were absurd.

When Rhum + Clay conceived this show, the idea of a comic becoming a political leader might have prompted thoughts of Boris Johnson's carefully cultivated buffoonery on "Have I Got News For You" and elsewhere. Since then, a certain Volodymyr Zelenskyy has given politician-comedians a rather better name. Comedy, as is so often the case, is in thrall to timing.

Glasgow-based Corin Sworn is the fifth winner of the Max Mara Art Prize for Women. Every two years a British artist is chosen on the basis of a proposal, rather than existing work. The fashion house then supports the project with funding, a bespoke, six-month residency in Italy and, following the Whitechapel Gallery show, an exhibition at the Collezione Maramotti in Reggio Emilia, where the HQ of the family-run business is located.

If, standing on a station platform, your arms want to make shapes in the air; if, walking home, you are mesmerised by the curved toes of your shoes against the pavement; if, in the kitchen, a stray salad leaf on the floor transforms before your eyes into a tiny green lizard, head up, questioning – then (if you are over the age of 10 and reasonably level-headed) you have probably consumed some mind-altering substance.

I've always keenly anticipated Derevo. A rare sight in London, they are the must-catch company in a singular branch of mime theatre - some would call it clowning, from an oblique, dark place of visions, fears and childlike imaginings. They are a small monkish Russian troupe who with apparent heedless aim have for the past 25 years been snatching at history, fantasy, antique commedia dell' arte, and the rubbish-strewn street in productions that often leave your brain spinning with questions but your heart twanging with comprehension.

There’s something off stage, something loud and threatening, pulsating in dark red, at the beginning of Julien Cottereau’s solo mime piece Imagine Toi. This is a show of fears and sweetnesses, and there’s no holding back on the former as we progress between rumbling giants and large dogs. The show is billed as suitable for ages four and up, and what a youngster might feel with real apprehension, adults enjoy as a stage show (though I’m not sure how well teenage attentions would be held).

Slava’s Snowshow is a Christmas package you don’t want to have unwrapped for you by someone else's description - it’s a fantastical, childlike, theatrical experience that for many is among the most profoundly delighting of their theatre-going experience, for others an empty whimsy.

Clowning, despite its association with great funnymen such as Joseph Grimaldi and Charlie Chaplin, has always had a dark underside of melancholy or even menace. More latterly it has been thought of in terms of “low” arts such as circus and street theatre, and so it perhaps shouldn't come as a surprise that fear of clowns, coulrophobia, is in the Top 10 list of phobias, up there with spiders, enclosed spaces and vomiting.