#21 What is this tube that this Coast Guard guy sticks his gun into while loading it?

#22 Set of 9 wooden balls. 4 black, 4 brown, and one smaller brown ball. More details in comment

#23 Grid of large metal cubes on a pole, located in the Las Vegas airport. Not making any noise and no lights, maybe an air filter or something? Located about 8ft off the ground and maybe 20ft long

#24 Pellets with a powdery substance coating them, found on the floor of a garage that had not been opened for a few months, each pellet a bit larger than a tater tot

#25 Round brown things with holes in them lining a small waterway in St. Pete, FL.

#26 A Pole With an Encircling Ring and a Sturdy Base

#27 Antique Wooden Object with Floral Carvings Resembling a Bat

#28 Mysterious Cubby Above the Built-In Stove – Unreachable from Any Angle

#29 Unusual Pocket Watch with a Lever and Peculiar Face

#30 Sword-Like Device Designed for Mains Voltage

#31 Chains at Animal Kingdom Disney World, Part of the Safari Tour

#32 Witt? Unusual Tongs-and-Strainer Combo?

#33 White Plastic Stick with Narrow Middle and Small Hands at Both Ends – Wedding Favor

#34 Cinder Block Walled Hole Beneath a Concrete Step – Purpose Unknown

#35 5-Foot Tall Item from an Egyptian Wedding – Removable Top with 4 Small Holes

#36 Mystery Strap on Backpack – Attaches with Velcro, Purpose Uncertain

#37 Waxy Minty Sticks in the Appearance of Hot Glue Sticks – Unidentified

#38 Odd Hammer-Shaped Tool with Flat Edges – Function Unclear

#39 Electronic Device on Neighbor's Balcony – 1.5 Feet x 8 Inches, Occasional Light

#40 Metal Boxes in UK Pubs – Unexplained Items Near the Bar