There is a room in the house with a quicksand-like floor. You might be able to swim up in it by jumping. If not, press P to turn on pitchmove, and then look upwards while moving forward. Thanks q333!
The pumpkin room can probably only be done with crystal boots and a glider. You need to parkour your way to the ceiling and find the exit. Using sethome along the way is very useful. You might also want to keep a spare glider in a bag so you can recover your bones after you fall to your death, and put it back in the bag immediately after using it.
The prize has a free right-click mode that gives you various friends. Its left-click mode requires lava slime balls placed to the left of it on hotbar. You can get them from testplants in red biomes. Place a testplant in your protection and watch what happens when you punch it.