Everyday Object Weaponization – The weapon user has the ability to weaponize an everyday object by changing the object and/or using the object with superhuman skill in order to achieve superhuman effects.
Crowbar (DC) is going to take on the Justice League with a crowbar that shoots rays in Justice League of America V1 #236.
Kraven the Hunter’s Lion’s Head Vest (Marvel) shows that even vests can be dangerous in Official Handbook of the Marvel Universe V2 #7.
The Monocle (DC) has a deadly monocle in DC Who’s Who V1 #16.
The Penguin (DC) has used umbrellas as weapons in DC Who’s Who V1 #17.
The Sportmaster (DC) uses sports equipment and turns that equipment into weapons.
The Wrecker’s (Marvel) Crowbar is imbued with Asgardian magic in Official Handbook of the Marvel Universe V1 #15.
The Clock King (DC) got up one morning and decided weaponizing clocks would be a good idea and makes an appearance in World’s Finest Comics V1 #111.