Individuals or startups often look for people to review their products to encourage others to buy them. You can either get started with a profile on freelancing websites or approach companies directly, offering them a review in exchange for a monetary reward by becoming an influencer. Even better, if you have your own website or blog, you could write entire posts about their products, thus allowing you to charge more money in the long run and build a portfolio with tangible results to show future clients.
A series LLC is a form of limited liability company that provides liability protection to multiple "series". Essentially, it's a master LLC with separate divisions, each protected and operating independently. As an entity, the series LLC is geared towards businesses where investors own multiple companies, with each series being protected from the debts and obligations of the other series. Currently, only several states support this option, including Delaware, Illinois, Iowa, Nevada, Oklahoma, Puerto Rico, Tennessee, Texas, and Utah.
On the other hand, if you are not responsible for its tax, then you should declare the equipment in Part III of the Business Property Statement (Equipment belonging to others). Where equipment is declared in Part III of the Business Property Statement, the Assessor will also send a Notice to File to the person reported as the equipment's actual owner.