Quoted from OhmEye:

There are lots of posts regarding protective mods and other stuff a couple years or more back in this topic but it's a long read. I think the main protective item was when the early ones had no protective metal bar over the orb lock that Stern later added to protect the plastic from breaking. Several places made a clear plastic to add protection but I like the one from cpr9999 the best. Mine had the metal bar but it blocks the view so I removed it and installed the polycarbonate one he sold me.
The trough kickout into the launch lane benefits from some protection too I think, or at least turn down the power in the menu as much as possible. I installed a couple metal protectors for that. I also have the scoop protector but haven't installed it yet, I think it's probably a good idea but to me doesn't seem high priority.
I replaced my pegs with service rails, very worth it in my opinion if lifting the playfield much. I've lifted mine many times without sideart protectors but recently got a set of those anyway since I only have to slip once to damage my art blades.
I added plastic protectors pretty much everywhere else but I think most of them are more decorative than necessary. I like the look of the colored Ulek ones that compliment the stock plastics so for me it's mostly to have everything match than for the extra protection but overkill protection is ok.

Quoted from ArcadeAction:

The Guardians lighted flipper kit is now available at http://www.ArcadeMade.com
Other kits beyond what is posted there can be made as well.[quoted image]

Quoted from Munsters:

Who can help me to find the topper?

Quoted from ElCid95:

I'd love to buy one of these off of you if you ever plan to start making them.

Quoted from PinballTilt:

I made that recently, see above. Let me know if you have questions. The LED soldering is the hardest part. I still need to design and print some sort of attachment system