| Year | 2008 |
| Date | 05-Dec |
| Volume | 201 |
| Issue | 4,340 |
| Page | 682 |
| Category | General |
| Part | |
| Title | A Christmas project. The pop-pop merry-go-round |
| Author | Jan Ridders |
| Notes | Describes his simple rotating present based on a pop-pop boat motor. Description, float, steampot, piping, pivot pin, foot, tea-light power, merry-go-round, operation |