Thanks for your question.
You seem to be making a small business endeavor much more complicated than it needs to be. Sure, you can create an LLC. Then, the tax on the profit on the sale of the items in your possession would typically be paid by the owners of the LLC.
You only need one. It doesn't make sense to use another LLC just to get funds.
In the end, if it's a rather small and hobby-like adventure, the LLC isn't necessary at all. Trusts are fairly restrictive and aren't typically used for simple businesses like this.
I also think people misconceive the protection an LLC gives. The LLC CAN protect the ASSETS of the LLC - but the second the owner takes a draw from the LLC, (the LLC gives money to the owner) then those funds could be taken for a judgement. One solution many people think is to just keep the money in the LLC; not so - if someone is determined enough, they can get a "charging order" and order the LLC to pay the distribution to the owner as provided in the LLC organization documents. If the owner just uses the LLC as their own piggy bank, meaning they are paying their living expenses out of the LLC directly, then the courts could (and often do) view the LLC simply as an extension of the owner, negating all the asset protections.
In this particular circumstance, you WOULD need a sophisticated consult to determine the best steps for your condition. It's not as easy as it seems.