My younger sister just got a betta (that she knows very well that she needs to take care of properly or I'll be taking him), and I thought I'd share some pictures. He's in a Marineland Crescent 5 alone for the moment, but we're planning on adding a small colony of RCS once my colony starts reproducing, the tank is cycled, and the plants start to grow in.
Here's little King Henry in his cup in the store:
His tank (still in process - we'll be adding clippings from my tanks, until then there're a couple fake plants for cover). The heater isn't in there at the moment as we're waiting for it to come in the mail, but the tank's in the warmest room in the house and is holding a steady 75*F. And while it is in the window, it's on the side of the house that never receives direct sunlight - my phone just likes to focus on light and make it look way brighter than it is:
And here's some picspam of him in his new tank. He seems pretty entertained by the wineglasses and the glass marbles inside of them: