Goodwill is known for accepting all types of items, but one donation had officials calling police.
On Sunday, the Goodwill Center on Friendswood Drive and East FM 528 found a bong in a box of donated items.
The bong even had marijuana residue still inside, investigators said.
It is green, 7 inches tall and has a small silver spout.
Goodwill employees called police, and officers said they are now on the lookout for the donor.
Officials said there are not cameras where the donation was dropped off.
A Goodwill spokeswoman said it was the first time she could remember someone ever donating a bong.