Placing things around your tank is really fun, especially when they react to the oddest things. When Puffy was in his 1/2 gallon before the 10 gallon, I used to place things all around him... everything from toy dinosaurs to marbles. Of all the things I put next to his unacceptable tank, he decided to become infatuated by... get this... a linkin log. The most boringly shaped dull brown thing next to his tank led to hours of amusement. He would try to swim through the glass to get to it, and after a while would just sit buy it watching it. When I moved it to the other side of the tank, he would follow it and hang by it over there. O_o what can I say, bettas are.... interesting little fishies.