Don't know where to buy it but that should be an easy thing to knock off. The mirrors would be easy enough to find at Hobby Lobby or Michael's - some place like that. There are a gazillion types of wire - can't tell for sure what that is but it's a soft wire, easy to bend and it's a rather random design. They probably bent it around 2 or 3 different sized forms. I'd wing it and make my own. Here is a link that might be useful: Wire on Amazon

These are from Quorum. Similar but a little less inside the globe

Hey, Kareem. Actually, you have nothing to worry about, mate. All the protective layers are still here, so everything is fine. I showed these pictures to my friend who works at https://sparklewash.com/upstate//upstate/. He mostly does pressure washing, so he knows literally everything about it. And, he said everything’s alright. So, don’t worry. Just give it a proper wash one more time, and it will do you go. It was wise of you to ask for advice here. Actually, I love people here. They can always help you. I hope I’ve helped you too. Keep us updated. Have a nice day.

It's nearly impossible to determine the exact reasons your plants are suffering because of so many problems they exhibit, and because they are grown in containers. Stunted plants can be caused by many reasons such as low oxygen levels in the soil, insufficient sunlight, viruses, cold soil or nutrient deficiencies. And the foliage issues are a deficiency of nutrients but hard to pinpoint compounded by the environmental stress the plants are dealing with. Watering is always an issue when growing in pots because several nutrients can easily be washed out of the soil when watering such as nitrate nitrogen, sulfur, boron, Manganese and Chlorine. Tomatoes/potatoes use a lot of sulfur, it easily leaches out of the soil and the fertilizers you're using does not seem to contain any. In fact it doesn't have much of anything except Nitrogen, phosphorus and potassium, so I'd start with sulfur as a potential deficiency. Your fertilizers are not a good selection for container gardening and you should be using a fertilizer which clearly states on the nutrient analysis Nitrogen, phosphorus, potassium and also includes Calcium, Magnesium, Sulfur, boron, copper, Manganese, zinc and maybe Molybdenum. Fish emulsion lacks many of these minerals with little to none and best suited for the ground. What did you use for the dirt in the pots? If your soil isn't porous and compacts there is no place for oxygen, and plants take oxygen from the soil as a basic requirement. The roots also drown and die if water can't drain in compacted soil, or the water runs down the sides of the pot. I'm not into container gardening but there is a lot to know to be successful. Sorry but I can't give you any easy answers. They're are some container gardener experts on this site and maybe one can give you a few pointers.