so, i have an extra card table in my room with the dimentions of four feet long, two deep. so i asked my parents if i could build an enclosure on top of it, and get an animal to put in it as a christmas present, and they said yes! so, i was wondering- how in heck do i build an enclosure, and what do i put in it? i have the animals in my signature, and i wanted something different. could someone help me? this will be my first time building anything other than simple robots, so i'm kind of confused as for what to do.