The best, most scenic, and easiest dayhike to make from Dominquez Springs is right up Fisk Canyon to the cutoff around Dominquez Mtn to ETusk (~a 1-2 hour hike up from Dom. Springs - each way). Here are some landmarks:
1- start at the main dry arroyo next to Dom Springs - the one you hike up on to the ruins.
2- after about ~2/3 mile you will climb over a very large boulder and see the first scattered pools of water.
3- after ~1 mile you will start to see intermittent flowing water and scattered tree's, grape vines, wildflowers, and some contact metamorphism with local calcite veins and mercury ore - look for it on the East side of the canyon.
4- from 1-2 miles the water becomes more frequent and flowing and the rock becomes banded and colorful especially on the West side of the Canyon. There are many small waterfalls and the water may be running 1-3' wide and 1-3" deep towards the 2 mile mark.
5- about 2.2 miles you will come to the cutoff canyon that leads around the North flank of Dominquez Mtn. You can't miss it because this is the main source of the springs/water you have been following. At this point you can either:
5a - turn around and hike back to Dom Springs and enjoy a frosty beverage.

5b - keep going up Fisk canyon (more tree's and springs and side-canyons)
5c - keep going down the cutoff canyon towards E. Tusk.
Kind of depends how much daylight you have and what your friends feel like. It gets dark early and fast in these canyons during the winter so don't push it too late

but much of this route is easy and fast walking. Perhaps bring a headlamp or flashlight just to be safe. Watch for Bear and Cougar scat/signs and enjoy. Don't let your friends wimp out and stay in camp - this may be a once-in-a-lifetime chance and Fisk Canyon is the best part of the entire hike... TWWG