1 Spring Postcard Show: Deltiology, or postcard collecting, is the third-largest collecting hobby in the world, behind coins and stamps, but postcards offer a rich treasure of images of old-time tourism and vacations of another era. The Sunshine Post Card Club is having its spring show with dozens of dealers from 9 a.m. to 5 p.m. Saturday at the Holiday Inn Express, 4750 N Dale Mabry Highway, Tampa. Free parking, $3 admission for nonmembers.
2 Blast Friday: Mark Farner, the lead singer of Grand Funk Railroad (We're an American Band, The Loco-Motion, Some Kind of Wonderful), performs a free concert as part of the monthly block party in downtown Clearwater. Opening the show will be special guest Stormbringer. The family-friendly celebration features vendors, food, family activities, contests and entertainment on the 400 block of Cleveland Street starting at 5:30 p.m. Friday. Free.
3 Cotee River Seafood Blues Festival and Boat Show: This annual festival is a reminder that living on the Gulf of Mexico gives us access to great seafood and that the spring boating season is upon us. The event running Friday through Sunday will also bring in popular blues artists, including harmonica master TC Carr and his band Bolts of Blue featuring Josh Nelms, the Steve Arvey Band and the Lauren Mitchell Band on Saturday. There will also be bounce houses, a bungee jump, pony rides and a petting zoo, boat tours on the Cotee River and an arts and crafts fair. Admission is free. Coolers are not allowed. Hours are 5 to 11 p.m. Friday, 10 a.m. to 11 p.m. Saturday and 10 a.m. to 5 p.m. Sunday.
4 Playing! Unplugged: Put away the TV, video games and electronics and head to Largo Central Park on Saturday from 10 a.m. to 3 p.m. for the third annual Playing! Unplugged event. The city is teaming up with local businesses and medical professionals to emphasize the importance of free play and creativity. Hands-on activities and play stations will be set up throughout the park. There will also be live entertainment, healthy food vendors and train rides aboard Largo Central Railroad's miniature trains.
5 Touch-a-Truck: This popular day in Dunedin's Highlander Park on Saturday will draw swarms of families from 10 a.m. to 2 p.m. to climb, honk and play around in all sorts of vehicles, including fire trucks, dump trucks, motorcycles, buses and military vehicles. They also will set up inflatables and a food court. It's free, but some attractions may have a fee. The park is at 1920 Pinehurst Road.
Sharon Kennedy Wynne, Times staff writer