You don’t need a magic wand, but you do need a few key items. Think of this as your ice-maker survival kit. Get a saddle valve (or a shut-off tee if you’re fancy), a copper or plastic tubing kit (flexible plastic is easier, I promise), and a drill with a small bit. Oh, and a bucket—because you will drip. It’s not a question of if, but how much.
Don’t forget thread seal tape and a wrench. If you’re feeling like a superhero, add a compression fitting or two. Fun fact: most hardware stores sell a “water line installation kit” that holds your hand through this. Buy that. Future-you will high-five present-you.