Whilst I had the ModRoc out I had a go at covering bottles which looked like the making of Christmassy people, for the Nativity or carol singers or jolly snowmen (or women) Asda's fruit juices, washing up liquid bottles a HP sauce bottle and a Mars drink. All of them have ball pool heads. (cheaper than polystyrene or spun cotton/paper especially when working with large numbers of participants )
Rolled up bubble wrap make arms. Either just the ends to make them flexible for inserting into cosy jackets or full "snow" arms .
When they are dressed I'll pop back and put a picture on here.......now to clean up the mess !!