I used an old scrub top to make my son's mechanic costume this year. Definitely hard with no pattern but it mostly worked out and I was happy with the end result! :
Mechanic Baby Costume | Last Minute Costume Ideas
Funny bear cartoon in mechanic costume carrying toolbox with car 22090631 Vector Art at Vecteezy
Little Mechanic Costume
Pin on Random3
I Am Tire Guy Funny Car Mechanic Costume Gift 3D Print Casual Tshirt | Mazezy UK
Adult Brown Mechanic Jumpsuit - Spirithalloween.com