OMG those poor birds! Are they real birds in there? That must be awful, there would be no air flow in that cage at all and the fish swimming past but out of reach must torment them all day!
I don't like birds in cages. At all.
The first tank reminds me of this one that I saw on here earlier this year... it was like a little office with a desk and chair and computer. Far too small for a betta, unfortunately, but a cute decor! The middle one looks great - I don't know why, but I actually quite like it, the only problem I can see with it is very low surface area for its capacity, and vastly overstocked, but any responsible fishkeeper would just use very small fish and reduce their numbers accordingly.
How did they plant it though! Or clean it lol!
I have actually seen betta-on-wall bubbles that were, IMO, large enough for bettas, they were about $30, holding about 2 gallons. They can't just be hung with a piece of string though, due to the weight there's a frame that has to be screwed onto the wall so unless you're good at covering up holes with putty and paint, you'd be left with holes in the wall if you ever removed it. It was basically half a sphere but with a flat bottom, and adequate surface area and swimming room for one betta IMO. Heating and filtration would be impossible though unless you put a reptile mat between the tank and the wall, and ran a bubbler or something in the tank. In Australia the heating isn't an issue, and loads of people myself included keep bettas without filters just fine.