The Adventures of a Boy and His Dog on the High Seas
May 19-June 10, $12, Mum Puppettheatre, 115 Arch St., 215-925-7686
Robert Smythe's The Adventures of a Boy and His Dog on the High Seas was a collaborative effort: He and his two kids, ages 11 and 7, came up with the story while vacationing in North Carolina, the home of Blackbeard and other pirates. The play follows a boy and his pup as they find a treasure map, fight a group of swashbuckling no-goodniks and are rescued by a manatee. Ages 5 and up.
Once Upon a Time ...
Sun., May 20, 3 p.m., $5-$10, First Presbyterian Church, 201 S. 21st St., www.lyricfest.org
This concert features abridged versions of universally adored operas Cinderella, The Magic Flute, The Barber of Seville and Hansel and Gretel. With the help of costumed princes, princesses, witches and birdmen, your pint-size Pavarottis will be bellowing along in no time. Ages 4 and up.
Down by the Stream
Sun., May 20, 1:30-3:30 p.m., free, Rolling Hill Park, 1301 Rose Glen Road, Gladwyne, 610-645-9030
Pack an extra pair of socks and head to Rolling Hill Park's Mill Creek for a family hike in search of frogs, fishes, insects and other teeny-tiny critters. Budding zoologists get their own microscopes, boots, nets and "bug boxes." Ages 7 and up.
A Special Day for Children
Sat., May 19, 1-4 p.m., free, Indian King Tavern Museum, 233 Kings Highway East, Haddonfield, N.J., 856-429-6792
Indian King Tavern Museum invites li'l historians to tour its 257-year-old building and experience 18th-century craft-making. Don Wallace, curator of tool collections at the Historical Society of Haddonfield, will show off rare, unusual artifacts (which he calls "what'sits"), while artisans create early-American-style pottery. All ages.
Rubber Ducky Regatta
Sun., May 20, 1 p.m., $5 per ducky, $20 for five duckies, Kemper Park, 905 Valley Road, Warminster, 215-443-5428
For the 12th consecutive year, squishy duckies will speed down Neshaminy Creek, with a promise of $200 for the owner of the first-place winner. Get there early for the noontime "Just Ducky" picnic. Dessert provided gratis. All ages.