Gadget

noun

1. A thing whose name cannot be remembered; thingamajig, doohickey.
2. Any device or machine, especially one whose name cannot be recalled. Often either clever or complicated.

   "He bought a neat new gadget for shredding potatoes."

3. Any consumer electronics product.
4. A sequence of machine code instructions crafted as part of an exploit that attempts to divert execution to a memory location chosen by the attacker.