Yes—**a listed crimp connector can make the ground splice more compact**, and a **self-grounding receptacle can eliminate the separate wire to the receptacle in a properly grounded metal box**.

Assuming you’re in the U.S. and installing new cable with an equipment grounding conductor:

- **Crimp sleeve:** Use a listed connector approved for your grounding wires’ size, material, and number. Leave a conductor extending from the splice for the ground connection. Use the manufacturer’s specified crimping tool; ordinary pliers won’t produce the required crimp. [IDEAL’s crimp instructions](https://www.idealind.com/content/dam/canada/assets/manuals/Steel-Crimp-Connectors-Model-411_Instructions_EN.pdf)
- **Feed-through grounding connector:** A green grounding connector with a hole in its end lets one longer ground wire extend through the splice to a grounding terminal, saving a separate pigtail conductor. Follow its wire-combination instructions. [IDEAL grounding connectors](https://www.idealind.com/content/dam/electrical/support/wire-connector-catalog.pdf)
- **Self-grounding receptacle:** With a metal box, bond the box to the incoming grounds using an approved grounding screw or listed clip. A receptacle specifically listed as self-grounding can then ground through its mounting connection, subject to its installation requirements. Ground continuity to downstream outlets must remain intact when the receptacle is removed. [Leviton’s grounding guidance](https://captaincode2017.leviton.com/node/134)

**Check box fill before choosing a connector.** A compact splice helps physically, but the box still needs enough calculated volume for the wiring, receptacle, and internal clamps. If it’s too small, a compatible extension ring with marked volume can add space outward from the baseboard. [Hubbell’s box-fill guidance](https://hubbellcdn.com/catalogfull/HES-MULTI-CAT-EN-03988_D.pdf)

Turn off the circuit and verify it is de-energized before working. These options require a valid grounding path back to the supply; attaching a wire to an old metal box alone does not establish one.