Common in sports, it’s usually round. You can kick it and throw it or toss it around. They make ones for stress that you can squeeze. And another word for a certain kind is testes.

I'm selling my car. It's in excellent condition, and it has really low miles because it was only driven from time to time. What kind of car am I selling?

I’m so excited bout this riddle that I’ve soiled myself

There once was a large prickly fellow, Who stood, arms up, in sand so yellow. 'I hold fresh water within, but protected by my spiney skin. So don't touch me or loudly you'll bellow.'

In a Venn diagram, I connect Avengers and puzzles and IKEA furniture.