Didn't read the whole thread so if this is a repeat comment sorry. Carry a bar of soap. You can clean a wound well with simple soap and water. Especially road/gravel rash. A stream is usually easily found as your water source. Also carry dental floss and a sewing needle. You can use to stitch a wound if needed, also sew a rip in your tube before you throw on the patch.
Ride safe YFF's