1) Card board beam balance (PHYS 150 class): you can make one by using a 2in x 12 in card board, a paper clip (straighten out to use as the central balance point), two paper cups, about 8 in long 6 pieces of sring.
2) Magnetic field lines: At least one bar magnet and compass. You can move compass around to trace the magnetic field lines.
3) Celestial globe: Use the transparent part of a liter pop bottle to track sun’s motion over the days/weeks.
4) Slinky: A long slinky preferred. You can order this from a catalogue for about 10 dollars. Small slinky will be okey. You can study : how pulses reflect of the fixed end, measure speed, make transverse and longitudinal waves, study dependence of wave speed on the tension.
5) Faraday cage: A large coffee can and a hand held radio to demonstrate that electromagnetic waves can be shielded by a metal container.
6) Chirping bird: need to buy during Easter time.
7) Coat hanger : use this to study reverberation of waves.
8) rubber pipe/hose: Doppler effect, sound’s pitch changes as the source moves.
Higher pitch when the source is approaching, lower pitch when the source is receding.
9) Meter stick, and a plastic ruler. Use this to show that long when set in vibrational motion, object vibrate with smaller frequency, short object with higher frequency. Someone with short legs, must swing their legs faster than someone with long legs. Connect this to the oscillations of a pendulum through which you can introduce frequency. Pendulum can be used to measure the time.
10) Blackbody radiation: Two different color pop cans, thermometer. Fill both with the same temperature, and the same amount of water. Measure temperature every 3 minutes.