Quick Park and grab on a street with wide shoulders.
X and Z both recently got their driving permits. That means at least 50 hours of practice driving apiece over the next year. That's more than 100 hours of windshield time for Dad on low-traffic roads. Occassionally there is something interesting on a stretch with no traffic. Obviously, that calls for a cache. Be sure to use your blinker when pulling over to park, follow all traffic rules, and be sure to use your hazard lights when appropriate.