| B+50+35 | Xylophone. | 2021-02-03 |
| B+10+60 | Tuning forks, various. | 2021-02-22 |
| B+10+60 | Tuning forks, various. | 2021-02-24 |
| B+10+60 | Tuning forks, various. | 2021-02-10 |
| B+50+25 | Tunable organ pipe. | 2021-02-03 |
| B+50+25 | Tunable organ pipe. | 2021-02-08 |
| B+25+30 | Torsional wave device, large or small. | 2021-01-27 |
| B+25+20 | Suspended slinky on threads for compression wave. | 2021-01-25 |
| B+25+20 | Suspended slinky on threads for compression wave. | 2021-01-27 |
| B+45+35 | Sprockets on shaft rotate against a card to make sound. | 2021-02-01 |
| B+50+50 | Sonometer: Resonant chamber with bowed strings (2). | 2021-02-22 |
| B+50+50 | Sonometer: Resonant chamber with bowed strings (2). | 2021-02-24 |
| B+50+50 | Sonometer: Resonant chamber with bowed strings (2). | 2021-01-22 |
| B+50+50 | Sonometer: Resonant chamber with bowed strings (2). | 2021-02-01 |
| B+50+50 | Sonometer: Resonant chamber with bowed strings (2). | 2021-02-03 |
| B+50+50 | Sonometer: Resonant chamber with bowed strings (2). | 2021-02-10 |
| B+10+1 | Simple pendulum: Ball on a string. | 2021-02-03 |
| B+25+10 | Rubber rope stretched across front of room. | 2021-02-17 |
| B+25+10 | Rubber rope stretched across front of room. | 2021-02-22 |
| B+25+10 | Rubber rope stretched across front of room. | 2021-03-08 |
| B+25+10 | Rubber rope stretched across front of room. | 2021-02-03 |
| B+25+10 | Rubber rope stretched across front of room. | 2021-02-08 |
| B+25+10 | Rubber rope stretched across front of room. | 2021-02-10 |
| A+14+15 | Precision lever: Balance beam on stand plus weight set. | 2021-03-15 |
| D+15+1 | Oscillating magnets in coupled coils | 2021-04-07 |
| B+20+15 | One tuning fork with tuned cavity, drives another. | 2021-01-20 |
| B+20+15 | One tuning fork with tuned cavity, drives another. | 2021-01-22 |
| B+20+15 | One tuning fork with tuned cavity, drives another. | 2021-02-03 |
| B+20+15 | One tuning fork with tuned cavity, drives another. | 2021-02-17 |
| B+35+0 | Large wood model of a double slit with hinged waves. | 2021-04-05 |
| D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2021-04-07 |
| B+45+51 | Helmholtz Resonators with tuning forks and a candle | 2021-02-22 |
| A+35+5 | Elastic collisions: Seven steel balls roll on a wooden track. | 2021-01-25 |
| B+45+30 | Compressed air jet blows through spinning disk with holes. | 2021-02-01 |
| B+55+7 | Chladni's Figures: Vibrational modes of a metal plate | 2021-03-08 |
| B+55+5 | Chladni's disc: Bowed disk forms patterns in sprinkled salt. | 2021-03-01 |
| B+25+15 | Brass spring on white plastic sheet. | 2021-01-25 |
| B+25+15 | Brass spring on white plastic sheet. | 2021-01-27 |
| B+25+15 | Brass spring on white plastic sheet. | 2021-02-01 |
| B+25+15 | Brass spring on white plastic sheet. | 2021-02-03 |
| A+14+1 | Block pulled horizontally by a spring. | 2021-03-03 |
| B+45+15 | Bell ringing in a jar evacuated with pump. | 2021-01-25 |
| B+35+20 | Beats with tuning forks on tuned cavities. | 2021-03-17 |
| B+20+30 | Beaker is broken by sound from speaker. | 2021-02-05 |
| D+15+0 | Bar magnet induces current in a coil, shown on galvanometer. | 2021-04-07 |
| A+35+0 | Balls of equal and unequal mass on strings, separated by a leaf spring. | 2021-03-15 |
| B+35+5 | Acoustic interference with Quincke (trombone) tube and sonalert. | 2021-04-05 |
