Join an exclusive, one-night only screening of "Unbounded" in Boulder. "Unbounded" is an adventure-travel documentary following a young, unaided crew of four as they hike and pack-raft for four months into the infinite region known as Patagonia; 7:30 p.m., The Boedecker Theater, 2590 Walnut St., Boulder; $9; 540-974-7956, tugg.com/events/unbounded-bjhf.
Boulder Tuesday Thursday Hikers — Join a day hike with a drop-in group. The group decides each time where to hike. It carpools to trailheads and reimburses the drivers for expenses. Bring your lunch, water, and snacks, and be prepared for all weather conditions. It is a leaderless group, and each person hikes at his/her own risk; 9 a.m., North Boulder Park, 7th & Dellwood parking lot, Boulder; free; 303-494-8822.
"Cigar Box Guitars" — Colorado artists Michael Bradshaw, Donald DeNoncourt, Peter Faris, and Michael O'Reilly share their handsome, working cigar box guitars in this unusual reclaimed material art exhibit; 10:30 a.m., Bricolage Gallery, at Art Parts Creative Reuse Center, 2870 Bluff St., Boulder; free; 720-379-5328, ArtPartsBoulder.org.
Rock Painting for Teens and Tweens — Drop in, get creative, and decorate a rock however you like. Make a pet rock, a kindness rock, a punk rock, the possibilities are endless. Contact teen services at 303-335-4845, firstname.lastname@example.org e-mail; 3 p.m., Louisville Public Library, 951 Spruce St., Louisville; 303-335-4845, louisvilleco.gov.
Historic Boulder Photo Scanning session — The Daily Camera is proud to announce its partnership with the Denver Public Library, Carnegie Library for Local History, Erie Historical Society, Lafayette Miners Museum and Museum of Boulder on a new pictorial history book, "Greater Boulder Memories: The Early Years." It invites readers to participate in this unique project by bringing relevant photos to a scanning session; 10 a.m. Wednesday, Carnegie Library for Local History, 1125 Pine St., Boulder; free; Boulder.PictorialBook.com.
Mad Scientist Day: Slime — Do you have what it takes to be a mad scientist? Come ready to learn, play, and explore. Ages 3 and up. Sponsored by the Boulder Library Foundation. Contact Reynolds Library staff at email@example.com, 303-441-3100; 4 p.m. Wednesday, George Reynolds Branch, 3595 Table Mesa Drive, Boulder; free; 303-441-3100, boulderlibrary.org.
Law Enforcement Leaders Read "Do You Know Who I Am?" — Attend the premiere of the film "Law Enforcement Leaders Read 'Do You Know Who I Am?'" at the Louisville Public Library. The event is free and open to the public. Talkback with Louisville Police Chief David Hayes; 6:30 p.m. Wednesday, Louisville Public Library, 951 Spruce St., Louisville; free; motustheater.org/event/louisville-premiere-law-enforcement-leaders-read-do-you-know-who-i-am.
Beth Lee at the Laughing Goat — Austin Americana and roots rock songwriter Beth Lee, of Beth Lee & The Breakups, plays Boulder. From soulful ballads, dancin' honky tonk, and roots rock 'n' roll, she has a sound that is all "country-fried rock 'n' soul"; 9 p.m. Wednesday, The Laughing Goat, 1709 Pearl St., Boulder; $5-$15; 512-203-2999.
Pelicans on Patrol — Discover fun facts about the American white pelican that summer in Colorado, and learn how this easily-seen bird finds food and survives. Designed for children ages 5-10 and their adult companions, with hands-on activities. Register at bouldercountyopenspace.org/register, space is limited; 10 a.m. Thursday, location provided to registered participants, Boulder; free; 303-678-6214, bouldercountyopenspace.org/register.
"The Final Chamber Works of Brahms and Rachmaninov" — Duo Vis-À-Vis presents "The Final Chamber Works of Brahms and Rachmaninov," a program that focuses on the subject of finality in multiple senses of the word. Brahms's Sonata for Viola and Piano Op. 120 No. 2 in E. Flat Major and Rachmaninov's Sonata Op. 19 in G minor for Cello and Piano (arr. for viola) constitute the bulk of the program. In addition to these works, the duo is performing the iconic "Spiegel Im Spiegel" by Estonian composer Arvo Pärt, and they will be premiering a new work commissioned by Vis-À-Vis and written in 2017 by Los Angeles based mezzo-soprano and composer, Shaye Swanson; 7:30 p.m. Thursday, St. Ambrose Episcopal Church, 7520 South Boulder Road, entrance off Barcelona Drive, Boulder; eventbrite.com/e/boulder-the-final-chamber-works-of-brahms-and-rachmaninov-tickets-44281239379?aff=ebapi.