To sign tools, make the ASL letter V sign with your dominant index and middle fingers, and hold your non-dominant index finger steady while the rest of your hand is in a fist. Pivot your 'V' fingers around the index finger a few times.
This mimics pliers grasping at a nail or pipe.
Teach your toddler the tools sign when they show curiosity about the tool box you keep in your garage for home repairs, or when they see you using your crafting supplies.
Teach the sign for tools when your toddler begins to observe tasks related to home improvement such as mechanical work, carpentry, or plumbing.