pledges relating to mental health are written on (paper) bricks and a wall is built with them
red coloured paper, marker pens, scissors, bluetac
Members of the group and also possibly their family & friends, write a pledge relating to each of the 'five ways to wellbeing' on a paper brick which has been made / cut out by the group members. These bricks are then used to build up a pledge wall. The wall can be built over the course of a few days, weeks or even months.
(Details can be found in the A Million Hands - Mental Health Resource Pack. https://www.amillionhands.org.uk/ This is a great resource for any group looking at doing their Community Impact Badge)