At the music festival, a circle of teenagers passed their hacky sacks back and forth while laughing.

In the veterinary anatomy lab, the professor pointed out differences in size and texture among the ball sacks of different dog breeds.

After the company restructuring, he feared he might get the sack.

After the picnic, the kids found a box of Hacky-Sacks and started teaching each other tricks.

The hikers packed lightweight bivouac sacks and set out before dawn.

At the harvest festival, the innkeeper offered a curious local specialty called sack-whey to the travelers.

The elves struggled to load the overflowing Santa sacks onto the sleigh before dawn.

He slung the heavy Santa sack over his shoulder and set off into the snowy night.

He hid the ten sack in his jacket pocket before walking into the party.

That deal is a cat in the sack; I'm not going to sign anything until I check the details.