I have been playing with these things since my childhood. Students can make and understand chemistry from these models.
It just cost me Rs 50 =1$ to make few of them
So let's get started.
Step 1: Things Required
Cycle Valve tube
Large sewing needle (i just used a sharp tool here)
A tin can (I am using nivea can as I don't have access to altoid can where i come from)
Step 2: Prepare the Parts
Cut of the lighting tip of the match sticks.
These things will be the base of the project. So make as many as you can
Step 3: Prepare the Complex Parts
Pass another valve tube to get a connector of 6.
Step 4: Packing Everything
Step 5: Using It
Play around and have fun!