My toddler wears idiot mittens so he does not lose them.
idiot mittens
idiomMittens connected by yarn or string (idiot string (Canadian English)) running through one sleeve, along the back and out at the other sleeve of a coat, to prevent the mittens becoming lost. Generally worn by small children.
I threaded the string through his coat sleeves to make idiot mittens for the winter.
To ensure the child would not misplace his gloves, his mother fashioned a pair of idiot mittens by connecting them with a long piece of yarn.