Lee Carbajal was determined to be a Boxtroll for Halloween this year.
"He actually has high functioning autism so he gets obsessed with certain things," said the 7-year-old's mom Tasha Carbajal. "I tried to get him to let me buy him a costume, but he would not."
So like so many parents, she took Lee's idea to the Internet and found exactly what she was looking for.
"I went and got some printables and a box, taped it together and painted it," she said. "And he loves it."
For Carbajal, seeing her son's face light up as he collected candy at Rock Creek Park's Trunk or Treat event was worth the time, energy and any frustration that accompanied building the costume.
"I just think when you go out and buy a costume, that's easy, but when it's something that your child actually wants and you can make it, it just makes it that much more special, because you took the time and effort to make it," she said.
It was on Pinterest that Hannah Smith came up with a costume for her infant daughter Korileigh, who was dressed as a stolen bag of money.
Cuddled up to her "bandit" mommy, little Korileigh's first trick or treat was a sweet success.
"She's in a baby sling, so this costume was perfect," Smith said.
More than 1,000 kids and their parents covered the park grounds for the annual Trunk or Treat festivities that included dozens of candy stations, carnival-type games, pony rides, inflatables, a hay ride and a showing of Hotel Transylvania on the big screen under the stars.