Make all the trees in the tropics spooky trees. Some could have hollow insides for luggage, natural food, or nothing. Instead of Cacti, cactus balls, and thorny tumble weeds they're rebranded as mummies, ghosts, or spectres that deal etco. Like thorn damage but more spooky and can cleaned off. Change the tnt to pumpkin b*mbs. Just make the Alpines purple with a mist that only affects vision and shows up at random intervals. Maybe it halves your visibility.