| Dishes |
| TV rods |
| Receivers |
| Rooftop array |
| Wave trappers |
| Wave catchers |
| Rooftop sights |
| Picker-uppers? |
| Natural sensors |
| Sights on roofs |
| Radio receivers |
| Firefly features |
| Signal receivers |
| Sensors in nature |
| Some wave catchers |
| Broadcast receivers |
| Cell tower features |
| Sets of rabbit ears |
| Cell tower equipment |
| Car-radio accessories |
| They catch some waves |
| TV reception enhancers |
| They transmit radio waves |
| They catch a lot of waves |
| My Favorite Martian" props |