XOOL 2 in 1 Leather Hole Punch Eyelet Tool Kit, 3/16" 4.5mm Metal Eyelets for Fabric, Hole Puncher, Eyelet Pliers for Shoes Leather Clothes Belt

a drillbit and a hole would suffice, but if you want to go further get one of this sets to make a hole and place an eyeletif you want to get the last drop of juice out of those boots, which is totally understandable if they're comfy or you cannot/shouldn't buy replacements right now: get one of thishttps://www.amazon.com/suckabagofdixbezos/dp/B0CDC95ZW6/and maybe have eyelets on both shoes so they look symmetricalthe same cheap tool is also good for belts and general diy styff