Monmouth County Fair (Freehold)
Spend the day at the fair with butter making, lumberjack shows, swimming and racing pigs, 4-H animal exhibits, rides, and more.  Saturday is Children's Day at the fair with the Diaper Dash starting at 11:45am and the Big Wheel Rally (big wheels provided!) at 1:30pm.  Registration for all kids races is at 11am.  On Sunday, grandma and grandpa get free admission (for Senior's Day) and you can all check out some classic cars. Friday 5pm to 11pm, Saturday 11am to 11pm, Sunday 11am to 5pm. Admission: $7 for adults, kids 12 & under free.  Free parking.

Morris County 4-H Fair (Chester)
Pony rides, hay rides, a petting zoo, a model airplane demonstration, clown acts, watermelon eating and cake decorating contests, dress-a-pet contest, a children’s pet show and, of course, amusement rides are all some of the usual favorites.  Friday and Saturday 9:30am to 9:30pm, Sunday from 9:30am to 4pm.  FREE, $5 parking donation.

NJ Festival of Ballooning (Readington)
Aside from the balloons themselves, family entertainment includes trapeze artists, kiddy concerts, amusement rides, fireworks, and plenty of food vendors.
Friday, Saturday and Sunday.  Balloon ascensions are at 6:30am and 6:30pm. Advance tickets: Adults $17, kids 4-12: $7, 3 and under free.  Day of tickets: Adults $25, kids 4-12 $10, 3 and under free.  Balloon rides are $200 per person in the morning, $225 per person in the evening for a 30-45 minute flight.

Family Fun Day at Monmouth Park (Oceanport)
Enjoy family day at the races which includes face painting, pony rides, music clowns, a bounce house, music and more.  Sunday from 12pm to 4pm.  Grandstand admission is $3.  Kids 12 and under are free. 

Karavan of Kids Fun Fest (Augusta)
The title says it all, a full day of entertainment for kids 3 to 12 including a baseball game, Amazing Art Project, a Hula Hoop Extravaganza, nature and science activities, famous dogs like Lassie's great-great grandson and the Husky Haven Race Team, music, theater, dance, face painting, balloon art, and more.  Saturday from about 12:30 to 4:30.  Tickets are $10.50 per person and include the baseball game.

Junior Zookeeper Day at Space Farms (Sussex)
This zoo is known for its wild cats but has more than 500 animals of 100 different species.  Not only is it a zoo, but also a museum of collections ranging from antique toys to antique horse drawn sleighs.  Saturday also happens to be Junior Zookeeper Day where kids can learn about being a zookeeper. Saturday from 9am to 5pm.  Children must be accompanied by an adult. $14 for adults, $9.50 for kids 3-12.

Music Man Singing Ice Cream Shoppe (Lavallette)
And you thought ice cream was fun on its own?  At this Ice Cream Shoppe the cool treats come with Vaudeville-style entertainment!  Best of all, when you order a Sundae, the show is FREE!  Thursday at 5pm enjoy Hannah Banana, Fridays at 5pm is Ice Cream Musical, Saturdays from 6pm to 11pm is Summer Cabaret.  Reservations required for certain shows.  Call 732-854-2779 or visit www.njmusicman.com for more details.

City of Water Day at Liberty State Park (Jersey City)
City of Water Day is not just happening in NYC!  Head to Liberty State Park for a day of kayak tours, bird watching, wild life crafts and activities, fish tanks and touch tanks, food and more. Saturday from 10am to 3pm. FREE.