| hickey |
| thingy |
| what's-its-name |
| whatsis(noun, means, device, machine, tackle) |
| whatsit(noun, material, instrument, machine, tool) |
| Rube Goldberg device(noun, device) |
| Rube Goldberg invention(expression, idiom, material, instrument, machine) |
| accessory(material, instrument, machine, tool, mechanism) |
| accoutrement(noun, means, device, machine, tackle) |
| agent(material, instrument, device, equipment, machine) |
| aid |
| arrangement(material, instrument, machine, tool, mechanism) |
| article(noun, entity, thing, object, material) |
| automaton |
| black box(noun, expression, development, means, device) |
| concern(noun, entity, thing, object, device) |
| creativity(noun, development, design, original, creation) |
| design(noun, development, original, creation, originality) |
| dingbat(noun, means, device, machine, tackle) |
| expedient(support, material, property, store, supply) |