If you haven't already, check for rust around and underneath the fender trim strips. You might need to cut out some rust and do some repair. The most permanent way is to replace the fenders or weld in patches. However, against internet wisdom, I did the repair with screw-in sheet metal patches and Bondo. It's been doing great for 5 years, so I'm happy for now.
Other things:
- Rear springs may be sagging. New springs are not very expensive and replacing them is pretty easy.
- Shocks (I went OEM from an online Toyota parts place) are also worth replacing and not too hard if not rusted too badly.
- Check your CV boots for cracks and slinging grease all over.
- How's the interior? The driver's seat tends to wear out on the outside bolster of the seat cushion where you slide over it when entering or exiting. You can find replacements in a junkyard, or swap the cushion with the passenger side, which puts the damage by the console where it's harder to see, and puts a fresh bolster on the driver's side.
- Chances are the driver's side floor mat is shot. Check online or at auto parts stores for cut-to-fit replacements. I got some rubber ones at Autozone which fit well and are great for muddy backcountry use.