Cut the cardboard from a roll of paper towels into halves or thirds and stuff it with hay. Clean toilet paper tubes work well, too. Get on the floor with your rabbit and give him one of the toys. Rabbits, like cats, are independent. Let your rabbit come to you.
Rabbits are also very curious.
They will want to check you out. Shake a rattle and then place it on the ground near your rabbit. He will probably pick it up and toss it. Play games like hide and seek with your rabbit or have him find alfalfa pellets hidden in your closed hands. Pretend the Slinky is sneaking up on him.