The do make little nail covers and they come in flashy colors. My cat Tortilla does a modified version of this, when she wants to play she will swat you when you walk by. She is declawed so I don't know if she is soft pawing us or would claw if able.
We have one of the toys that dangles something fuzzy on the end of a cord, she loves it and you don't have to be too active to play with her. BleeckerStreetGirl posted a toy like the one below by Bergan, it seems like a really fun toy for an active cat.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan