A business owner can have many different business ventures under one LLC, by
filing for a DBA for each venture. The pros to filing multiple DBAs under the
same LLC, is that all of the business ventures will be taxed together as one.
The con with having so many different businesses registered as a DBA under
one LLC, is that if something happens to one business venture, it will effect
every business under the LLC. For example, if a guest at a Bed and Breakfast
slips and falls and sues the company and the LLC is found liable, all of
assets of each business venture could be jeopardized. Whereas if each
business venture is set up as an individual LLC, if something happens to one
business the other businesses are protected.

You may want to check with your state agency that registers LLCs to find out
if you can register two very different businesses under the same LLC. They
may need to be related businesses.

It might be helpful to visit the Register your DBA name section of SBA.gov.

I am pretty sure that you can do many things under one LLC company. You just
have to make sure that all of your ventures are documented under the one LLC
for tax purposes. If you need more information, i would advise you to contact
your states business taxes department and see what they can help you with for
your LLC concerns. You will want everything to be correct for your tax
purposes so they are the best to speak with.