HOUSTON -

Wednesday was all about random acts of kindness, and the patients and their caregivers at M.D. Anderson were some of those on the receiving end.

"Somebody gave me an envelope letter with $20 in it. That is pretty cool," said cancer patient Spencer Mitas.

The social media craze sweeping the country has made its way to Houston. It is a hidden gift giveaway that uses Twitter to direct people to free money. Houston's giveaway is planned for Friday, but first the organizer is suggesting people perform random acts of kindness.

Wednesday, that person gave followers instructions to bring gifts to M.D. Anderson for patients and caregivers.

"Any support, any act of kindness -- you would be surprised if you are not a part of this, or have been through this process, how far this can go to uplift spirits," said caregiver Gary Irving.

And the gift-givers said it is the least they can do.

"It makes somebody's day better, it makes them feel better," said one anonymous gift-giver. "You don't know what spot they are in in their lives."

"(It's) better to give than to receive, always," said gift-giver Lillie Benard.

People all over the city are looking forward to the scavenger hunt on Friday.