if y’all or your children (especially children, this would be soooo cute!!!) are inspired, do a lil painting or drawing of a place/scene/room/house that you’re staying in while you’re there. when we were little my aunts had a condo on the beach and we’d stay for a week every year. my dad would sit on the balcony and paint a watercolor of the ocean for them as a gift every year. this and maybe a gift card to their favorite local place could be really fun as a thank you.