I'm quite fond of Jacoby Canyon for such a thing. I used to take my wife daughter through Jacoby when she was about 4 in our Grand Cherokee (2" lift). Heck, my in laws did it in their stocker 4Runner and my mother-in-law is NOT wheelin material.
Anyway, I like it because it is not just a fire road but it is still very easy, scenic and you still get that remote, deep in the woods feeling. I also always liked doing that one "backwards", from HWY18 up, then connecting with other roads and trails in the area. Look it up on a map you'll see what I'm talking about.
Good luck and have fun!
Big Red:'93 YJ, SOA, Deaver leafs, Fox shocks, Dana 44 front w Reid Racing knuckles, Ballistic Fab high steer, Detroit, Superior shafts & Warn hubs, Ford 8.8 (31spl/discs), "Super 88" kit, Detroit, Dana 300 w Low Max 4:1, 35" BFGs, Allied beadlocks, Mastercraft seats, Currie bumpers, Warn sliders, Gen Right fenders
Clarks Summit and Skyline Drive on the south side of the lake are very scenic and easy, slightly more than a dirt road.
But enough about me. Let me tell you about my Jeep.
Blk 09 2Dr Rubi | TF 3" lift | 35" MTRs | Fox Shox | TF Rear Speedbumps | JKS Trackbars | EVO Axle Sleeves and C Gussets | ARB Diff Covers | Shrockworks Bumpers and Rock Rails | Synergy Ball Joints and Tie Rod | Warn 9.5ti | sPOD | Superchips | MyGig LockPick | Front/Rear Cameras | Dual Optima Yellow Tops | HID Headlights and Fogs | Front/Rear Aux Lights | VisionX Rock Lights | Cobra 29 LTD | 4' FireStick | TrekArmor Seat Covers
IIRC Holcomb Valley - not Holcomb Creek - is a nice easy dirt road with about a dozen signs along the way at points of interest. Pretty sure I got a guide book at a ranger station that told about the area and significant events. But that was 18+ years ago with my infant daughter in a stock 94 4X4 Blazer. It was a fun day.