Tomatoes splat really well, especially rotten ones. Maybe eggs would be good, but tomatoes are cheaper. I think an open source easy to make at home slimy and smelly (preferably also something that stains) water balloon solution could do the job for a modern consumer base. Who wants to carry around smelly rotten tomatoes?
Bring back the classics. Not sure when/ why rotten tomatoes went out of style. Rotting onions could be a good remix/ update.
Tomatoes splat really well, especially rotten ones. Maybe eggs would be good, but tomatoes are cheaper. I think an open source easy to make at home slimy and smelly (preferably also something that stains) water balloon solution could do the job for a modern consumer base. Who wants to carry around smelly rotten tomatoes?
Definitely rotten veggies over eggs. Have you seen how much eggs cost these days?
Very true. Eggs are a bad idea. Maybe some of that artificial rotten egg smell stuff?
The cheapest dishwashing soap you can find mixed with water, maybe?