How to deck a Sunday arts school room contained by a train station part.? My new Unit for my toddler (ages 2-4) sunday university class is...

My new Unit for my toddler (ages 2-4) sunday university class is called: "greeting aboard the traveling train!" I'm supposed to have chairs set up like a train and I already own posters that they sent me that look like your looking out a skylight into a city. I'm also supposed to have a train station department so I can give out tickets at the birth of every class. They told me I could use PVC Pipes to make it but I'm not sure what those are or how to form a mini-office in for a time room. Please give me tips and info...a few pictures might comfort too. Please keep contained by mind that little kids will be in this classroom and I dont want them to attain hurt. Also budget is minimal so something that can be reused in a couple of years would be preferable and something undemanding to assemble and cheap to buy would be perfect. It say to make an awning type roof, A wooden porthole and door may be nailed to the cardboard wall...what doea that be set to? can you really nail wood to cardboard? do you call for a special kind? thanx
Answers:    i hope i can abet with this.dance to Lowe's and go to plumbing ask the prison working to comfort you for this PVC is in plumbing.it comes contained by different sizes.so it would be heard to speak about you how to buy.
how about only just making a frame and using large pieces of broadsheet or cardboard to make adjectives of the walls?