The scavenger hunt draws thousands of contestants from around the world, who make art, stage performances and perform acts of charity in the week-long competition. The scavenger hunt is a fundraiser for Collins' charity, Random Acts.
This year, Collins, 39, asked contestants to stop by Roland Park Place, or another retirement home, as part of the scavenger hunt, which wrapped up on Saturday.
More than 100 people -- about 30 different groups of contestants -- arrived at Roland Park Place bearing cards, flowers, candies and doughnuts, said the retirement home's public relations director, Bridget Forney.
Several contestants brought along their children to meet the residents. The video above shows two young brothers passing out handmade cards and sharing hugs with the residents. (Sniff! Must be some dust in my eyes.)
Tippens, an 89-year-old retired school administrator, said she doesn't see her eldest grandson as a television star, but just a nice young man.
Tippens said she's very proud of him for organizing the scavenger hunt, and knows her late husband would also be proud.