Some of my most favorite projects to do in the Makerspace are also the most inexpensive. These projects are great for developing creativity through repurposing and upcycling. Teaching students to source items that may otherwise end up in the trash is a great service to education and the environment!

These two projects are also great introductions to robotics without the need for expensive kits or components!

Toothbrush Battle Bots:

Materials needed:

  • Toothbrush new or used (free or cheap)
  • 3 Volt Cellphone micro vibration motor ( approx.$1-2)
  • 3 Volt coin cell battery CR2032 (Amazon approx. 50 cents each)
  • Double sided tape

Cut the head off of the toothbrush. The amount of the handle left will affect movement, so have fun experimenting! There is a good clue in the video!


  1. Use double sided tape to attach the micro vibration motor to the tooth brush.
  2. Use another piece of double sided tape to attach battery to motor.
  3. Connect one of the motor wires to the bottom of the battery being careful to make sure it has a good connection.
  4. Tape the other wire to the top of the battery to complete the connection.
  5. Experiment with different toothbrush shapes and motor positioning.
Toothbrush Battle Bot Components
Toothbrush Battle Bot Components
Toothbrush Battle Bots
Toothbrush Battle Bot


Yogurt Cup Robots


  • Empty yogurt cup
  • 3 pencils or dowels. You may also use markers to make an artist bot.
  • 3V DC  Toy Motor ( $2-3)
  • Dual AA Battery Holder ( $1-2)
  • 2 AA Batteries
  • Hot Glue Gun
  • Hot Glue Sticks


  1. Attach the 3 pencils or dowels to the inside of the yogurt cup evenly spaced (or not!) to make a tripod.
  2. Hot glue the battery holder to one side of the yogurt cup.
  3. Hot glue the motor to the other side of the cup with the motor shaft over the edge of the cup.
  4. Place a 1″ piece of hot glue stick offset on the motor shaft.
  5. Connect the wires to the terminals on the motor.
yogurt cup robot
Yogurt Cup Robot Components
Yogurt cup robot
Yogurt cup robot


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