I love your tank but you already have a lot of toys to amuse him. May be try to put something out side of the tank. Like a small toy or something. Put it right next to the tank so it touching the glass.
Also about betta hammock, it has metal wire you can use pliers to remove it. The metal will eventually rust in the tank, and the rust can hurt your betta. Not sure where is the wire though , i never had the hammock for my betta. But i would assume may be you can see it or saw it already.
How is the filter working? Don't forget that you will need to rinse it weekly in the tank water.
I like that pink plant in the middle of the tank. Embarrassed to ask , i never buy live plants ...is it live plant?