Natsu has an obsession with making flower crowns
she'll force hinata to make them with her and also make him wear them
she also makes all of hinata's friends wear them and uses them as presents for when it's their birthday
so practically everyone has a small flower crown collection all hand crafted by natsu ( and hinata )
bonus ;
even though he'll never admit kageyama thinks the flower crowns are adorable and will wear them when he's home or over at hinata's place