@Huggy i just saw someone on a Facebook group recommend this for easy acorn collection and thought of you and all your trees 
Fruit Collector Metal Basket (Small Size) Nut Gatherer Long Handle Tool for Collecting Tennis Golf Balls - ORINETOOLS https://www.amazon.co.uk/dp/B07BHLCLZJ/ref=cm_sw_r_cp_apa_i_h8pKDbNWY2WC6
Fruit Collector Metal Basket (Small Size) Nut Gatherer Long Handle Tool for Collecting Tennis Golf Balls - ORINETOOLS https://www.amazon.co.uk/dp/B07BHLCLZJ/ref=cm_sw_r_cp_apa_i_h8pKDbNWY2WC6