You can to some degree. Remember that you will have to have the DOM elements already existing on the page so if any of the referred JS is adding elements, there may be some disconnect with Stimulus. However, a lot of it probably can be moved over. For example, if you have a date picker which has a lot of different attributes and customization, that would probably be a good candidate. A nested forms "Add Item" & "Remove Item" links may not be a good fit since you're adding elements to the DOM.