Hiya, that's a nice age range
How about '10 plastic bottles on a snowy wall' Rhyme from Under 5s you could adapt
10 green bottles.. Cut and build the brick wall with individual paper/box/card bricks +
polyester wadding for the snow - this should be flame retardent, add glitter, sequins & glue for sparkle. If you've the space to make the display board wall with a top/ledge, stand the bottles - decorated maybe, on the top for an interactive game - or tie them so they don't fall all the way to the floor. Scrunch up paper balls to knock the bottles off. If differently sized, score accordingly or make the win criteria how many bottles can be knocked off in one go - 3 scrunched paper 'snowballs?
To add multiculture to the display look at travelling with or specifically at fair grounds ..
Use your search engine to look for Fariground people showmen travellers.
You may have to plan for turn taking & possible supervision but should be fun :snowman:
Hth xx