In gymnastics I worked really hard on my Bronze Badge. I had to learn how to do handstand forward roll with straight arms, do a cartwheel straight into a one handed cartwheel and a forward roll to straddle. I also did a backward roll to straddle.
I made a castle with an inside out box, two roll insides and some brown paper.
I am learning about castles and knights at school. I made some arrow slits for windows using a pencil and a knife (mummy helped with the knife).
On Minecraft you can build a castle. You could build one out of cobblestone or mud or wood or obsidian. In the olden days they made castles out of stone.
Minecraft skeletons have bows and arrows. They shoot arrows at you. You have to be far enough away to avoid the arrows. You can have a bow and arrow and shoot back at them.
Here is some more information about minecraft skeletons.