I love going on dates with lots of different people- not in a romantic way, but I love to get to know new people and get experience dating different kinds of people and discovering what I want in a significant other. I've done some really fun things, including-
Frisbee golf, a fun alternative to mini golf!
A bookstore scavenger hunt (works better with a group)
Amusement park, for sure! But take time to do the little things and see the lesser-known attractions. Keep it laid back.
Go to an arcade
Marathon a TV show/movie series you both love
Alternatively, introduce each other to your personal favorite shows.
Messy twister (definitely a group date)
Roast marshmallows, starbursts, and other candies over a candle using fondue forks
Go swing dancing (my personal favorite!)
Have a Mario Kart/Super Smash tournament