Since the ACNL-SE lacks of the functionality to complete all the museum I created a JS script that fills your storage room with all the museum objects (331) so you can take them to the Owl in the museum and get your museum 100% completed.
You need to load your save and then go to the "Players" tab, hit CTRL + SHIFT + I and paste the following script in your browser's console.
PLEASE NOTE THAT THIS WILL OVERWRITE YOUR STORAGE ROOMS
Since the ACNL-SE lacks of the functionality to complete all the museum I created a JS script that fills your storage room with all the museum objects (331) so you can take them to the Owl in the museum and get your museum 100% completed.
You need to load your save and then go to the "Players" tab, hit CTRL + SHIFT + I and paste the following script in your browser's console.
PLEASE NOTE THAT THIS WILL OVERWRITE YOUR STORAGE ROOMS