I always leave the radio on for my two when I go out and if it is dark I always leave the light on.
Kongs are excellent at keeping them busy while your out.
Fill with peanut butter or pate for a quick and easy filling or of course you could choose a messier filling
Teddys are another good comfort for them as they can snuggle up to them
When I go out mine always sleep in their crates as I feel this helps them feel secure.
Hope this helps
Sharon,Charley & Melody.