Make sure you have an even number of players for this.
Hold the joy-cons as you would in table-top mode, or when playing Super Mario Odyssey for the motion controls. Next give one other player one of your joy-cons and try to play normally.
One player handles breaking blocks, looking around, and using the A, B, X, and Y buttons.
The other player handles moving around and placing blocks.
MineCraft Nintendo Switch Edition can be played with one pair of joy-cons, just not how you would expect.
Obtain full iron armor (Diamond if you two are ambitious)
Conquer a woodland mansion / nether fort / end city / what have you