Rattlesnake hike: 10 a.m., Ron Stewart Preserve at Rabbit Mountain, 14950 N. 55th St., Longmont. Trek through prime rattlesnake habitat and learn about these often misunderstood creatures. Meet at the shelter to share in a discussion about rattlesnake habitat and behavior, and learn things through seeing and feeling. Participants will walk away feeling more comfortable about sharing open space with these scaly friends. Free, discover.bouldercounty.gov.

Nature Therapy Group: 4 p.m., Coot Lake, 6247 63rd St., Boulder. Attend a restorative, therapeutic nature experience at Coot Lake. This event is designed for anyone who wants to learn more about nature therapy, better their mental health and reconnect with nature. This session will be focused on interpretation. Participants should bring a small notebook and pen, the Inaturalist app and appropriate shoes and water. Free, eventbrite.com.

Dollhouse Thieves concert: 5 p.m., The Garden at Left Hand Brewing, 1245 Boston Ave., Longmont. This talented group blends neo-rock and indie-folk with jazz-inspired vocals and unique instruments like the accordion, clarinet and trombone. Free, lefthandbrewing.com.

Unauthorized Absence concert: 6 p.m., Bootstrap Brewing, 142 Pratt St., Longmont. Unauthorized Absence is a classic rock cover band playing songs that transport listeners back to the soundtrack of their youth. bandsintown.com.

Jazz on the Front Porch: 1 p.m. Sunday, Butterscotch Studios, 620 Kimbark St., Longmont. Head to the front lawn of Butterscotch Studios for the kickoff of the Summer Sunday Jazz on the Porch series. The Charles Benzig Trio will provide the perfect soundtrack for a relaxing summer afternoon. Bring a lawn chair and a snack, and enjoy great music and community. Free, 303-483-3257, butterscotchstudios.com.

Sunday Shandy Shakedown concert: 2 p.m. Sunday, The Garden at Left Hand Brewing, 1245 Boston Ave., Longmont. Enjoy good vibes all day with live music by Scott Von and Groove Holiday. Enjoy a full day of music, yard games and sunshine. Free, lefthandbrewing.com.

Seashell ring dishes craft: 2 p.m. Sunday, Jillian Jensen Creative & Events, 324 Main St., Suite G, Longmont. In this workshop, turn real seashells into trinket dishes using paint, decoupage and gilded gold edges. Participants will go home with a set of three handmade dishes perfect for rings, earrings or just sitting on the nightstand. $33, eventbrite.com.

Memorial Day service and picnic: 1 p.m. Monday, American Legion , 4760 28th St., Boulder. To honor Memorial Day, Boulder Post No. 10 American Legion will be hosting a program at the Legion. Following the program, attendees will adjourn to the pavilion for a wreath laying ceremony. The picnic will begin at 2 p.m. All Post 10 member organizations, veterans and their families and guests, and the public are invited to attend. The Post will provide the main course. Everyone attending is expected to bring a side dish or dessert to share. Live music will be provided by the Dream Team. Free, 303-442-9551, boulderlegion.org.

Playdate Café: 10 a.m. Tuesday, Erie Community Library, 400 Powers St., Erie. Children learn and grow through play. Caregivers recharge with chats and a cup of coffee or tea. Playdate Café is a special time for caregivers to relax while their little one enjoys unstructured play. Playdate Café also offers caregivers the opportunity to connect with Children’s Services staff and one another. Ages 0-4. Free, highplains.libcal.com.

Karaoke with Nic: 6 p.m. Tuesday, Bootstrap Brewing Company, 142 Pratt St., Longmont. Nic’s Mobile Music brings the party to Bootstrap on Tuesdays and gets the entire crowd involved. bootstrapbrewing.com.

Silly Gooses mixed comedy mic: 6:30 p.m. Tuesday, MECO Coffee Collective, 318 Fifth St., Frederick. A friendly and supportive comedy mic that welcomes performers to hone their craft in stand-up as well as character work and clowning, musical comedy, spoken word, improv and performance art. Free, 303-951-5143, longmontoutloud.com.

Teen Writing Club: 4 p.m. Wednesday, Carbon Valley Regional Library, 7 Park Ave., Firestone. Join Teen Writing Club to practice creative writing, receive feedback and learn how to provide helpful feedback to others. Participants will complete writing exercises and learn about writing styles, genres, story elements, character development, historical eras and more. Free, highplains.libcal.com.

Rewind Wednesday: 5 p.m. Wednesday, Dry Land Distillers , 519 Main St., Longmont. Break up the week with some beats by DJ Drake. He will be sampling the “golden oldies” with a little jazz, some funk and his own brand of eclectic flair. Free, 720-600-4945, drylanddistillers.com.

Editor’s note: Availability and scheduling of events may be subject to change.