When I first began to learn the game, my coach encouraged me to "Wall Ball" every day for 10 minutes and cradle while I watched TV. I cannot forget to mention, that he told me to sleep with my stick. As odd as all of this sounds, it worked!
Below is an image of the steps to success with "Wall Ball" compiled by US Lacrosse and a couple of videos to illustrate it.
At times there are not enough hours in the day to drive players to locations with a wall. Here are two rebounders you can keep in the backyard.