How do I get my personal property back from my business partners?

You get your items back by suing for them. If the items lack particular sentimental value and/or are readily replaceable, it is procedurally simpler to sue for their value rather than for a court order requiring their return. (For various court procedural reasons, a lawsuit for money only is easier to bring than one seeking a court order that another person do something specific, like returning your belongings.) That said, you have the right to sue for an order for these items' return, but be aware that if you do so, you'd lose the option of suing in small claims court: small claims cannot issue those kinds of orders.
If you do so for the value, the case could be settled by the return of the items.
You should name your former LLC and the other members personally in the sit.
To address another issue: unless there was a forced sale clause in the operating agreement, under which a member could be compeled to sell his interest to the LLC and/or other members (and in which case you and your husband would have been paid the value of your interest in the business), the majority members could NOT remove you as members: your membership is a property interest (something you own) and person A cannot make you give up something you own  unless there was some contractual agreement (e.g. the LLC operating agreement) requiring this. They could remove you from management or authority without a buy-out, etc. provision, but could not actually take your member status/ownership away. You may wish to consult with an attorney about his issue.