Shrubs or small trees for infant school (Up Hatherley GL51)

Benhall Infant School is looking for shrubs or small trees to add to their outdoor learning spaces. We are hoping to add some more greenery and colour to make the learning environment more natural. Any unwanted shrubs gratefully received, in pot or not. E.g. hydrangea, roses, acer, hebe, viburnum, bamboo, smoke bush, black elder. But really anything that will grow in a pot, especially evergreens. Thank you