my ds age 4 goes to nursery 5 mornings a week. each child has their own named peg with drawstring bag for extra clothing in their group colour. for the past month someone has put my son's bag in other peg locations and put the same child's bag on my son's peg. at first i thought mistake people bump and things go missing. but every time i put the right bag on the right named peg it goes missing again next day. not a huge problem but i sometimes need to change my ds into slippers or put dry socks on if he has jumped in puddles and i can spend 10mins looking for his things while he misses out on time with his friends. aibu to ask what would you do?