I am. My family has been in Texas since 1874.
I can't really encourage you to go down this path.
Making silver that prides Texas? Why?
In particular, the "legal guides" and the whole retro-history point of view. If you do know your Texas history, you may remember that some tax evaders formed a "Republic of Texas" and formed a compound in the Davis Mountains about 15-20 years ago. The got into an armed conflict with the (State of) Texas Rangers. It was an interesting news item in the Austin American Statesman that the "Republic of Texas" surrendered to the "State of Texas."
It would probably be more helpful to you to ask yourself privately why the police were at your door. In particular, if you are doing anything illegal or obnoxious, you might want to keep a much lower profile. In part, that means to avoid posting the angry or anti-establishment postings.
One of the odd little secrets is, most of the people who read the law and pay attention eventually do the same sort of things. They know so much law that they can pass a test on it. They are allowed to call themselves "lawyers." They recommend to everyone else to "follow the law."
The overall tone in your post is how to challenge the police, or the establishment. You simply can't get anywhere that way. You can't drive 100 miles an hour down I-35 and claim freedom. You have to conform enough to keep other people safe and not grumpy.
So, sure, make your Texas shaped trinkets. Go ahead and even put a piece of petrified wood in the middle. Stamp a pecan, a mockingbird, and a bluebonnet on it. Put a star marking Goliad, Washington-on-the-Brazos, the Alamo, and San Jacinto on it. It will sell. If your craftsmanship is really good, I would even buy one.
You could put the Branch Davidians on it. Personally, I believe they were unlawfully killed. Many people believe that. I have spoken to Riordan and some of the survivors at the screening down at Dobie, and I think my opinion is pretty fact based. However, it won't buy me groceries. Your coin with the Davidian property location won't sell enough to recover your costs.
So, again, I can't really encourage you to go down that path.