I was recently given a Schwinn Meridian 26" Tricycle. It is missing the bottom bracket and crank set. It's been a looong time since I had to buy parts like this. I did some googling and amazon shopping and there is way too many options, and most seem much more performance than I am looking for.

I am not looking for nothing crazy, just the basic stuff to get this thing put back together and working. This is basically just a bike I am using around our campground to go fetch ice/beer from the convenience store.

I will need a bottom bracket, cranks, sprocket, and pedals. Picture attached to show what I''m putting this into. It is threaded on both sides

Just need some direction what I need (links directly to items helps!).