The social dilemma: No financial incentive for companies to keep gathering data. Make a tax on data or a way to track how much data companies gather
Completion Time: 1 year
ShopLYFT - Like LYFT but for groceries except instead of paying for the groceries, you just walk out of the store with them(all orders must be $900 or less)
List of source code for ethereum projects that allows you to query for specific exploits, ie keccak(msg.data) not being the same in every transaction
Cal clone club - clone the startups/large companies and perform the same service without making any profits
Blockchain that keeps track of pollution, forces people to pay on their agreements, using IOT devices that track pollution.
Use crypto economics like proof of work/stake to make a review system that cannot be bought like yelp, amazon reviews, rotten tomatoes
U2f security key for in person use ie yubikey for houses
Delivery drivers in doordash need to wait to drop off package. Use public key private key cryptography to let them open a box to drop package in
Dao owning football/sports team
Completion Time: 1 month
You should build a smart contract that allows illegal immigrants to pay the people that smuggle them across the border only when they actually cross the border
Create a discord server where you can ask questions and get paid in crypto using discord commands for answering technical questions
Quiz pop up questions as google chrome extension for youtube lecture videos
Box next to soccer field or basketball court that tracks the number of people there to predict when to go to pickup at optimal time
Optimal size for bug bounty research
Short Quizzes at the end of articles to test knowledge/for fun
Take series 66 exam for fun lol
Create match highlights(soccer, basketball) based on number of comments in live chat