Cleveland Museum of Natural History — Exhibitions on display through Sept. 1 are Megalodon: Largest Shark That Ever Lived; and Sharkabet: A Sea of Sharks from A to Z. Museum is at 1 Wade Oval Drive. Admission is $12, $10 ages 3-18, college students and seniors, and free for children 2 and younger. www.cmnh.org.
After School Skills Series: Origami — 4-4:45 p.m. today at the Canal Fulton Public Library, 154 Market St. NE. For grades K-5. Free. To register, call 330-854-4148.
Polish American Club Fish Fry — 4:30-8 p.m. Friday at the Polish American Club, 472 E. Glenwood Ave., Akron. Starting at $7.95. 330-253-0496.
Ohio State Reformatory Ghost Hunts — Friday at the Ohio State Reformatory, 100 Reformatory Road, Mansfield. Ghost Hunts offer an overnight experience for those with serious interest in paranormal activity. $70; proceeds go to restore the structure. www.mrps.org.
A New Adventure Widows & Widowers social group — 7:30 a.m. Saturday at Eat’ N Park, 200 Howe Ave., Cuyahoga Falls. 330-929-5430 or 330-630-9275.
Project Wild/Aquatic Workshop — 8:30 a.m. registration, 9 a.m. to 4 p.m. Saturday at the McKinley Presidential Library & Museum, 800 McKinley Monument Drive NW, Canton. For more information, call Lynette Reiner at 330-455-7043 or e-mail firstname.lastname@example.org.
Unattached Seniors— 9 a.m. Saturday at the Waterloo Restaurant, 423 E. Waterloo Road, Akron. 330-644-6624.
A New Beginning Social Group for Widows and Widowers — 9 a.m. Saturday at Thano’s Restaurant, 71 Fifth St. SE, Barberton. 330-745-6239 or 330-388-0463.
Cuyahoga Falls Parks and Recreation Department Garage Sale — 9 a.m. to 2 p.m. Saturday at the Quirk Cultural Center, 1201 Grant Ave., Cuyahoga Falls. For information, call 330-971-8425 or 330-971-8225 or go to www.cityofcf.com/parksandrec.
The International Holistic Lifestyle Expo — 10 a.m. to 7 p.m. Saturday and 10 a.m. to 5 p.m. Sunday at the Radisson Hotel, 35000 Curtis Blvd., Eastlake. Businesses that serve the holistic/metaphysical market will have a collaborative forum to expose the public to their products, arts and services. More information at http://feathertouchpathandpurpose.com/id60.html.
Spring 2013 Gemboree — 10 a.m. to 6 p.m. Saturday and 10 a.m. to 5 p.m. Sunday at Emidio & Sons Expo Center, 48 E. Bath Road, Cuyahoga Falls. Demonstrations, exhibits and more. $5, $4 seniors and students, $1 ages 7-14. For more information, call 330-929-3798 or go to www.lapidaryclubofohio.org.
Friends of the Portage Lakes Library Spring Book Sale — 10 a.m. to 3 p.m. Saturday at the Akron-Summit County Public Library, Portage Lakes branch, 4261 Manchester Road, New Franklin. For more information, call 330-644-7050.
Widows & Widowers (SOS) Starting Over Socially Brunch & Dominoes — 10 a.m. Saturday at Perkins, 4896 Everhard Road, Belden Village. Participants pay for their meals. Information call, Norma at 330-452-5889 or Bernie at 330-477-5325.
Fused Glass Flower Pendant Class — 10:30 a.m. to 1 p.m. Saturday at Peninsula Art Academy, 1600 W. Mill St. Marianne Hite will direct class where participants will create flower pendants. Class is $45 with a $10 materials fee. Peninsula Art Academy members are $40. To register, call 330-657-2248 or go to www.peninsulaartacademy.com.
Author Visit — 1 p.m. Saturday at the Learned Owl Book Shop, 204 N. Main St., Hudson. Marjorie Tannehill will sign copies of her book, Serendipity Happens. 330-653-2252.
Kent State University Fashion School Fashion Show — 1 and 6 p.m. Saturday in E. Turner Stump Theatre, 1325 Theatre Drive, Kent State University. $40 for 1 p.m. matinee and $65 for 6 p.m. awards show. 330-672-2787 or www.tix.com.
Hoover-Price Planetarium Shows — 1 p.m. Saturdays and 2 p.m. Sundays at the McKinley Presidential Library & Museum, 800 McKinley Monument Drive NW, Canton. 330-455-7043.
Jim Henson’s Pajanimals Live: Pajama Playdate — 4:30 p.m. April 27, PlayhouseSquare Palace Theatre, 1615 Euclid Ave., Cleveland. $10-$34.50. 216-241-6000 or www.playhousesquare.org.
Bluegrass Saturday Nights— 7-11 p.m. Saturday at Homerville Community Center, state Route 301. All pickers welcome; open stage and jam rooms. 330-416-2222.
Postage Stamp Show — 10 a.m. to 4 p.m. Sunday at the Clarion Inn, 6625 Dean Memorial Parkway, Hudson. Free. For more information, call 330-832-5992.
Summit County Spring Avant-Garde Art & Craft Show — 11 a.m. to 5 p.m. Sunday at the Tangier, 532 W. Market St., Akron. $3, free ages 12 and younger. A portion of the proceeds will benefit Stewart’s Caring Place. For more information, call 440-227-8794.
Rock and Roll Hall of Fame Gallery Talk: Jimi Hendrix and Psychedelic San Francisco — 1 p.m. Tuesday at the Rock and Roll Hall of Fame and Museum, 1100 Rock and Roll Blvd., Cleveland. For more information, go to www.rockhall.com.
Carovillese Club Spaghetti Dinner — 4-7:30 p.m. Tuesday at the Carovillese Club, 570 E. Cuyahoga Falls Ave., Akron. $6 to $8.25. 330-929-6767.
Summit County Historical Society Perkins Stone Mansion Tours — 1-3 p.m. Wednesdays, Thursdays and Fridays at the Perkins Stone Mansion, 550 Copley Road, Akron. $6, $4 seniors, $2 students. 330-535-1120 or go to www.summithistory.org.