From Easier.com:

'Ent' Heads
Date: Sunday 15 November
Time: 10.30am – 1pm and 1.30pm – 4pm
Duration: Varies depending on the nature of your creation.
Cost: £2.00
Age: All ages
Meeting place: The Yan, Grizedale Centre
Booking required: Just drop in. All children must be accompanied by an adult.
Description: Create your own 'Ent'! Ents are guardians of the trees and protect our ancient lands against dark forces. Materials provided.

Grizedale Forest is overseen by the UK Forestry Commission but I cannot find anything on their site that mentions this event.

There are plenty of other activities mentioned in the press release/story published on Easier.com but this one sounds particularly cool for those of us who love Tolkien's works. It sounds like maybe Ents will work their way into pop culture after all.

I like that.