Currently, to add an object we need to click on the [+] button on the right hand side.

Instead, the whole object name and description could be made into a button, which would lead to a cleaner UI. Using some accent colour could help with the object selection, as well as the category selection on top, e.g. simple mock up:

Currently, to add an object we need to click on the [+] button on the right hand side.
Instead, the whole object name and description could be made into a button, which would lead to a cleaner UI. Using some accent colour could help with the object selection, as well as the category selection on top, e.g. simple mock up: