Well, beyond the pretty Barbie dress-up wardrobe items covered above, there are a few things for LOTR that should be done so it PLAYS well.
The post in the top orbit lane (under Orthanc tower) doesn't always catch the ball. You should either tilt the post forward a bit (by adding a washer or 2 under 2 of the bracket screws on the bottom of the pf so the bracket tilts inward) or put a (trimmed) post rubber on the end of the post so it is wider and stops the ball better.
Ball catch area under Barad Dur (top right pf corner, from left orbit shot): remove small post stub and screw, and add a foam square to the underside of the metal overhang--no more bounce-outs!
Sometimes the left ramp entrance (by the potd) isn't smooth--you might need to tighten the nuts holding the ramp down, so the entrance is flush with the pf.
I *highly* recommend a deflector for the potd exit, so the ball rolls smoothly onto the left ramp. There's a clear curved one that mounts to existing posts/screwholes, or (what I did) you an mount an Army of the Dead figure at an exit near the potd exit to deflect the ball smoothly. Museum putty holds the figurine nicely with no permanent alteration. And the game flows muh better with the deflector, no significant effect on scoring...
Make sure potd is level, so ball doesn't tend to go to one side. level the back legs and/or put a washer or 2 under one side where potd goes thru the backwall.
There's a clear deflector for the entrance to the potd (by the vuk) that works well; prevents bouncebacks into the vuk and ball hangs.
Finally, this game benefits greatly from fine-tuning. Adjust the orbit/lane guides, deflectors, etc. so the shots flow smoothly around the pf.
OK, 2 "dress-up" items. A clear crystal/glass Palantir ball (30mm) looks *much* better than the plastic one with the ugly 'worm'! $3 plus shipping from cristalier.com, takes maybe 5 minutes to install... And the translite looks a lot better with a fluorescent filter (orange translucent filter tube). And you an add cooler figurines anywhere you want with that museum putty--removes without a trace. [OK, 3. 3 dress-up items, and... AMONG the dress-up items are such things as....] 
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