Try grinding nibs in a mortar and pestle or spice grinder, mixing them with chili powder, cumin, paprika, pepper, salt, or other spices, rubbing the combination onto veggies, and grilling or roasting them.
Home gardeners can plant and grow their herbs and through using an herb grinder, grind them up for a fresh infusion of flavor when cooking or dry and store them so they're available for use all year long.
If you already own a mixer and you are interested in grinding meat for your own ground beef or to grind or shred other types of food items, then the meat grinder attachment is a worthwhile purchase.
Eventually, you'll be able to make the transition from the emery board to the nail grinder, but keep in mind that even after the acclimation period your dog may still not like the grinder initially.
The biggest drawback of the dog nail grinder as seen on TV is that the grinding wheel is loud, and the dog may initially be uncomfortable around it, especially if he's a skittish dog to begin with.