Support custom objects via the mobile Salesforce and Box integration.
The Box and Salesforce integration for Salesforce mobile does not support custom objects at all so we had to create a deep link workaround that redirects to the associated folder within the box mobile experience (this also requires some salesforce coding to populate a field with the corresponding folderID). This is not a seamless experience....it is a clunky redirect.
Also, you are not able to create the corresponding box folder for the first time from the mobile experience....you have to create the box folder from the desktop from within the box integration within salesforce first, before you are able to access it from mobile. This is mainly due to the the mobile box and salesforce integration not supporting custom objects out of the box.
The custom object set up for the web app is also not seamless and requires from VF and tricky setup.