Here's a method for connecting two tamas from your own collection, which is an easy way to keep them in position as you connect them. Take two pieces of tape, stick the ends to make it facing sticky-side out, and attach the tape to your tamas. Then, position both tamas on a flat surface, and proceed to connect them. The tape will hold both tamas in place so they can connect easily. After they are done connecting, just remove the tape!