1. You really can just pick one at random.
2. Pick some.
3. Sling TV has a bunch of them (not all) available on-demand.
"Child star from the 90s" is understated. It seems like if you were a child/teen star back in the day and you either didn't strike it BIG or fade away to a life of drugs and controversy, Hallmark's SUPER welcoming to bringing them aboard for their original movies. Hell, even Melissa Gilbert and a few of the former "Brady kids" have made appearances in their movies. I've been noticing a lot more TGIF kids, former Disney kids and late 90s-early 00s teen movie stars appearing in a lot of these Hallmark movies.
There are a few missing from that bingo that I've noticed in my years of watching these sorts of movies (yeah, I'm a sucker!):
1. Some sort of Holiday Themed competition event: Either is a competition to win the local winter festival's annual ice sculpting competition, the local Christmas cooking baking competition, the local gingerbread house building competition, the local neighborhood decoration competition... Hell, I don't remember but there could've been a snowman building competition in there somewhere.
2. Showboating kids: Some instances where the kids of one of the main characters has a talent, almost always singing, and they hit you on the head with it. This always results in the kids performing at the local Christmas pageant on stage as everybody in the audiences is, like, TOTALLY into it and holiday cheer is ramped up to 100%.
3. Magical angels interfere with someone's holiday sorrow to bring cheer: Self-explanatory. Angels, be them Christmas angels or guardian angels, focus on some poor soul to make them happy. I've noted, there's a few where the angel falls in love with the person and gives up their angelic powers to become human. In mostly all cases, they angels take human form to befriend the main character and help steer their lives in a more positive direction, or help them right a wrong in their community. No doubt inspired by the angelic interference in "It's a Wonderful Life".
4. Magical Christmas item: An ornament, a stocking, some sorta Christmas knick-knack has powers to grant wishes, bring two lovers together and change lives.
And I've been seeing these ones more recently:
5. Dogs and Cats bringing people together over the holidays: Animals bringing Christmas cheer to their masters, helping them find lovers and such.