Here is a list of Popular Sports and their Improvised Indoor Equivalents:

Sport: Football

Equivalent: Paper Field Goals

Setup: Fold a piece of 8.5 x 11 paper in half so it’s long and skinny. Fold it in half again the same way. Now triangle it up like you’re folding an American flag. The resulting wad should be a very compact little triangle. If you don’t know how to fold an American flag, join the Boy Scouts and suffer like the rest of us did.

Rules: One guy holds his hands up, palms out, and touches the tips of his thumbs together. The other guy tries to flick the paper football through the open space in his hands, like a field goal kick.

Accuracy: This game omits every aspect of traditional football – running, passing, blocking, tackling, play-calling – except kicking field goals. As such, it’s a remarkably faithful imitation of a Ravens / Colts game, but otherwise not very close.

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Sport: Basketball

Equivalent: Trashcan Basketball

Setup: You need a trashcan and anything that can be held in one hand. This can be a crumpled up piece of paper, a crushed soda can, a ball of rubber bands, a stress ball, anything.

Rules: One player attempts to throw the projectile into the trashcan. The other player plays defense. If played in an office, the players may confine themselves to wheeled office chairs for an added challenge.

Accuracy: Remarkably close. What the game loses in scoring and fouls, it more than makes up for in the volume of trash-talking.

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Sport: Hockey

Equivalent: Coin Hockey

Setup: Three coins of equal denomination and a long smooth surface, like a conference table.

Rules: Put the three coins together like a triangle. Tap the coin closest to you very firmly. The force will be transferred to the other two coins, causing them to scatter.

You then work this trio of coins up the table by sliding one of them between the other two. The moving coin can’t touch either of the stationary coins and it can’t fall off the table, or play changes hands.

If the coins get to the end of the table, shoot them through a goal made by the other player’s hands.

Accuracy: Notional. There’s a goal and you slide a flat object through it. It barely has any correspondence with the game of the same name. I mean, come on. It’s like people don’t even watch hockey anymore.

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Sport: Baseball

Equivalent: Home Run Derby

Setup: A small object (same size as Trashcan Basketball) and a long, flat object. A binder full of procedures, a cafeteria tray or a textbook will work just fine.

Rules: One player throws the object. The other player swings his “bat” at the object and sends it as far as he can. He then imitates his favorite announcer’s method of describing a home run.

Accuracy: Most people don’t even keep score.

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Sport: Mixed Martial Arts

Equivalent: You Wanna Go?

Setup: Two guys in a hallway, conference room or classroom.

Rules: After a mock insult is exchanged between the players, they bump chests, throw their arms up into the air, and taunt each other with some variety of, “You wanna go? You wanna throw down, cupcake? You gonna back up that tough talk? What? What you looking at? What?” This continues until one or both players back down, saying some equivalent of “That’s what I thought” or “Yeah, you just wait.”

Accuracy: Close enough.