just drill perp. holes through the dowels near one end, (OK, I used sections of AL tubing I cut from a walker I got at Goodwill...no FUCKING JOKES, assholes!) run some 6 mm or whatever cord through them, tie them in a loop, and hang them from anything you like. I take them to the gym and hang them from the regular pullup bars. You can supplement the grip tape with golf/batting gloves for improved grip so you can hang on longer. This helps with timed lock offs...something I also do.
The downside is that my hands are now permanently locked in that gripping position, but I figure that's where they're most useful...at least the right one, anyway. Just wish I'd chosen 2" dia dowels instead of 1.5".