Teacher Putter Clips
Teacher putter clips have a flat surface with a prong on each side. They attach to your putter face with double-sided tape. Align the clip so that it is centered with the sweet spot of your putter face. Once you start practicing with the clips on, if you hit the sweet spot the ball with go straight. If you miss the sweet spot, the outside prongs with knock the ball off-line. The putter clips come in a 3-pack of varying difficulties; the prongs are closer together on the pro models. The putter clips are a great training aid to improve your putting impact pattern. The clips are available online at PelzGolf.com (see Resources).
The elevated aimline's purpose is to improve your ability to read putts. The aid is basically two stakes and some string. Set up a putt that has some break to it. Let's say the read for the putt is "left edge." Put stake 1 approximately 12 inches behind the ball and stake 2 a couple of inches behind the left edge (your target line). The elevated string on the top of the stakes gives a visual line all the way to the target and allows you to putt underneath it. Now putt the ball along the path of the string. Your putter head should also follow the path of the string. Because you can see the line and the ball simultaneously, you can see if your ball followed your intended path or if you just misread the putt. You can make this training aid yourself or purchase it online through PelzGolf.com (see Resources).
Golf Tempo Tray
The tempo tray, though small and simple, is effective. The tray clips to the shaft of your putter and has indented grooves for you to balance a golf ball. Once the tray and golf ball are set, you should be able to putt without the golf ball falling off the tray. This will improve the rhythm and tempo of your stroke. If you take the putter away too quickly, the ball will fall immediately. If the transition to your forward stroke is too fast or jerky, the ball will fall off. It also encourages a full follow-through, because if you stop the putter head immediately after impact, the ball will also fall off the tray. The tempo tray is available online at Sklz.com (see Resources).
Carbite/Sergio Garcia Putter Ball
The putter ball is a full-sized putter, but instead of a club head it has a round metal ball that is only slightly larger than a golf ball itself. The ball is weighted so that it feels like a real putter. Trying to putt straight using two round objects is difficult. Any off-center hits will send the ball dramatically off-line. The putter ball will improve your impact positions and consistency of stroke. The putter ball is available at online at GolfEtail.com (see Resources).