you can search for threads on handling if you like, but, in general, free-handling is a good method. Sit on the floor, or at least near to the floor, and reach into the container gently, slowly bringing your hand to right near the T, coax the T from behind with a finger or little brush, and the T, if not too nervous, will begin to walk onto your hand. You can then allow the T to continue walking, from hand to hand, being careful to not let the T wander to the edge of your hand, or a fatal fall can result. I usually let a handling session last around 5 to 10 minutes, before replacing the T to its home, by gently allowing the T to walk off your hand back onto the substrate.