Is there a way to invest a magic item, or more particularly, gain their effects from equipping them?
Howdy there! Investing is not quite yet supported, however we’re going to put in a change in the short-term to support gaining the effects of an invested item by marking it as equipped. We’ll have that available in one of our next updates, once we’re done testing to make sure it doesn’t break other things unexpectedly. 
Thanks so much for the feedback!
Awesome. Thanks for the reply!