4B Invention Convention

Here is 4B's first invention presentation, Serbia Inc., and The Mechanical Watering Machine

Here is 4B's second invention presentation, The 1st Einstein Blues, and their invention the Splasher.

Here's the 4B's Wacky Inventors showing you their Rube Goldberg style machine the Fishy Fillets machine.

Here's the Moldy Cheese Guys AMAZING Rube Goldberg invention called Thiztukages even though it didn't take ages!