What exactly is an Beanie?

An Beanie is a small, stuffed animal that is usually made from felt, wool, leather or cloth. It is often given away at sporting events. Many collectors swear that they do not feel any sentimental connection towards the items in their Beanie collection. Instead, they invest countless hours researching the market and gaining knowledge of the nuances. Additionally, they realize that their pursuit is a bit silly, and that some people might find them to be crazy.
Beanie Babies were given out during a baseball game.

Since 1997, 22 Major League Baseball teams have offered Beanie Babies during baseball games, drawing thousands of additional spectators to their stadiums. Ty has collaborated with MLB to create special tagging to Beanie Babies to commemorate players and other special occasions. This includes Mac the Cardinal, Rocket the Blue Jay and Sammy the Bear. Each one has its own unique giveaway day.

They are important

Vintage Beanie Babies can be valuable, depending on the condition and the rarity. Some collectors can pay as much as $50,000 for a 1992 Ty Beanie. Some collectors will spend more than $25,000 for an original 1995 Lefty the Donkey.
They are made of wool, felt, cloth, leather, or silk

Felt is one of the strongest fabrics. It is made of tiny fibers which are interlocked in each direction.  beanie hat  makes it lighter than woven fabric that is made up of interlocked fibers that are twisted in a straight line. Also, it is the strongest fabric because it requires the most fibers to be durable. It is also waterproof and stain-resistant and hypoallergenic.
They've got a clown's face.

This  beanie  is adorned with a big clown face that has a propeller. It is made of acrylic yarn and comes in one size fits most. This clown  beanie  also has an embroidered front design and plush hair.
They are made of an unbrimmed cap

Beanies are small hats that are made from wool, felt fur, hair, or wool. These materials are compacted and then shaped with a combination of rolling, pressing, and heat. Fez is a flat brimless top cap made of red felt. It is typically worn as a hat in winter, when temperatures is below the freezing point.