“The Little Mermaid” sing-a-long screening: 1 p.m. Sunday, Boulder Public Library Main Library, Canyon Theater, 1000 Canyon Blvd., Boulder. Bring kids to a movie sing-a-long of “The Little Mermaid” (2023). Everyone is encouraged to sing. Doors open at 1 p.m., and the movie starts at 1:15 p.m. Free parking. Bring food and drinks or purchase at the venue. Free, facebook.com.

Coffee & Classics: 8 a.m. Sunday, Downtown Boulder, Pearl & 8th, Boulder. Fuelfed Coffee & Classics is a focused gathering for classic European car enthusiasts to share their passion, not a juried car show. This event is not about leased Italian super-cars, but rather about driving European classics as they was meant to be driven. From Aston to Zagato, Alfa to VW, it doesn’t matter; just drive it. carsandcoffeeevents.com.

Tween Graphic Novel Book Club: 3:30 p.m. Sunday, Meadows Branch Library, 4800 Baseline Road, Boulder. For this meetup, the group will discuss “Dungeon Club: Roll Call,” by Molly Knox Ostertag. Tweens are welcome to attend. The club discusses a different graphic novel each month and completes an activity related to the book. For tweens ages 9-12. This group meets on the last Sunday of the month. calendar.boulderlibrary.org.

Boulder Q+ Tea Dance Party: 4 p.m. Sunday, Velvet Elk Lounge, 2037 13th St., Boulder. The Boulder Q+ Tea Dance Party is a fun, inclusive dance event. DJ Neffertiti will be spinning groovy beats, and Velvet Elk Lounge will be serving up delicious cocktails and food to keep the vibes flowing. Celebrate community and connection while dancing and hanging out in a welcoming atmosphere. $10, 303-993-8743, eventbrite.com.

Paper & Spine Used Bookstore Winter Sale: 9 a.m. Monday, Boulder Public Library, 1001 Arapahoe Ave., Boulder. Paper & Spine Used Book Store diverts from landfills while making used books, DVDs, and CDs available to the community at a low cost. All revenue from sales goes directly towards library programs designed to engage and enrich the community. All items will be on sale for $1. Browse a wide variety of titles and find affordable gifts for friends or yourself. calendar.boulderlibrary.org.

Monday Musical Storytime: 10:15 a.m. Monday, Boulder Public Library, 1001 Arapahoe Ave., Boulder. Get ready to dance and sing during this live story time full of songs, musical stories and more. All ages are welcome. Children must be accompanied by an adult. calendar.boulderlibrary.org.

All About Love Toddler Dance Party: 11:15 a.m. Monday, Boulder Public Library, 1001 Arapahoe Ave., Boulder. Come move and groove with your toddler using props and having fun. Parents will be dancing and celebrating about the love between them and their child and spreading love around the world. Dress up in Valentine’s Days colors and prints. For toddlers ages 1-3 years old accompanied with a caregiver. calendar.boulderlibrary.org.

Chess Club: 5:30 p.m. Monday, Boulder Public Library, 1001 Arapahoe Ave., Boulder. Play chess and learn with chess master Joshua Romero on second and fourth Mondays every month. Players of all abilities are welcome to drop in. Ages 8-18. Children younger than 8 are welcome with an adult helper. calendar.boulderlibrary.org.

Monday Pub Runs at Sanitas Brewing: 6 p.m. Monday, Sanitas Brewing Co, 3550 Frontier Ave., Boulder. Join a run every Monday evening. Look for a group of runners near the front door. The group normally runs 5K on the bike paths, with various routes. This is a social run; the goal is to strike an easy, conversational pace (generally 8-10 minutes/mile) and enjoy one another’s company. Free, 000-000-0000, sanitasbrewing.com.

CU Boulder Concert Band and Campus Band spring concert: 7:30 p.m. Monday, Macky Auditorium, 1595 Pleasant St., Boulder. Join for a night of music featuring the CU Boulder Concert and Campus bands. These ensembles comprise students representing nearly every major and college on campus. The program will feature some exciting works by McBeth, Dunton, Swearington, Price and more. Free, 303-492-8008, cupresents.org.