<p>Wow! dictatoranna, those rooms are incredible!!
Z - our middle son was into whales & dolphins way back when and we had a pretty cool themed room. Blue tube lights in strategic places can make the room glow at night (we used theme at the crown moulding, baseboards & around the headboard at different times). A large well-placed aquarium or even a bowl of fish are almost essential - Bettas don’t need much care at all. We never added a bubble machine, but I bet little girls would get a kick out of it. A fisheman’s net on the wall loaded up with coral, starfish & shells is kind of fun too. </p>
<p>Just a couple of ideas (free of charge!) that may or may not work for you - the undersea theme is so fun! Hope you have a blast setting it up - I know the girls will LOVE it! </p>
<p>Is this off topic?? :)</p>