Google-Electro-MapaCatapult: I feel like there could be a more efficient way to get rid of birds beside launching missiles which aso could injure people.

WindPlane: Consider using a different material.

Grappling Hook: Consider having a fail-safe if one of the magnets come off so people won't sue you.

Feedback:

Rat Rid Rat: What if you used the rats for fuel of the Rat Rid Robot. Also add an "AI" sensor to detect cute rats so it does not eat them.

City Spiderman-Swinger-Thingy: Fully develop port ideas

Wind Train: Will the turbines slow the train down?