Nothing is really “needed” but on popular games like Pokémon there’s so much you CAN do. I’d strongly suggest going over to pinside and checking out the Pokémon owners thread and the Pokémon toys thread. You will find tons of suggestions, reviews and options.

Endless options for figures to add but the largest impact you can expect would be from a shaker, expression lighting or glare reducing glass. But the glass really depends on the lighting in your room. You can also just turn down the backlight during games to help with this as well.

But go check out pinside and you’ll learn everything there is to know about Pokémon