Why don't we ...?
Why don't we swim in the ocean?
We could ...
We could eat spaghetti / eat dinner.
Do you fancy ...?
Do you fancy dancing with me?
How about ...?
How about going shopping?
Let's ...!
Let's go on a trip! / Let's travel!
Why don't we ...?
Why don't we go running?
Why don't we ...?
Why don't we play video games?
Let's ...
Let's make a cake! / Let's bake a cake! / Let's bake!
