| 9656-1 | 1 | Early Simple Machines Set | 2008 | Duplo and Explore | 102 |
| 970680-1 | 1 | Special Elements for Early Simple Machines Set | 2002 | Service Packs | 19 |
| 9540-1 | 1 | Early Math Numbers Set | 2004 | Duplo and Explore | 115 |
| 9654-1 | 1 | Early Simple Machines II | 1998 | Duplo and Explore | 113 |
| 9655-1 | 1 | Fun Time Gears II | 1998 | Duplo and Explore | 50 |
| 9653-1 | 1 | Mechanical Toy Shop | 1995 | Duplo and Explore | 32 |
