From Axl Rose to ZZ Top, great musicians are made, not born.

So you’ll want to stick a First Act Discovery instrument in your child’s hands at an early age.

The colorful acoustic and electric guitars, drums, percussion pieces, and musical playthings (picks, drumsticks, xylophones) are designed for budding Beethovens.

They’re easy to hold, pluck, or bang and come with easy-to-use books that teach through fun songs and activities. The instruments are so affordable that your kid can experiment with several — and you won’t blow your horn when the tambourine ends up in a closet.

Skip the stuffy violin lessons.

Let your power rocker get her Led on.

Available at Toys R Us, 1514 Broadway, between 44th and 45th Streets (646-366-8800 or toysrus.com); online at firstact.com.

DRINK
Lower East Side Girls Club & The Earnest Sewn Co. Lemonade Stand
What: All profits from the sale of drinks and baked goods by Sweet Things Bake Shop support programs for inner-city girls.
Why: Sip and see.
When: Sat. & Sun., noon-6 p.m.
Where: The Earnest Sewn Co., 90 Orchard St., at Broome St. (212-979-5120).

LEARN
New Parent Luncheon: Getting into Preschool
What: JCC preschool director Ilana Ruskay-Kidd demystifies the daunting application process.
Why: Harvard, baby.
When: Tues., 11:30 a.m.-1 p.m.
Where: The JCC in Manhattan, 334 Amsterdam Ave., at 76th St. Register at 646-505-5708 or online.

DISCOVER
Science Barge
What: Sustainable floating urban farm with everything from solar power to vegetable gardens.
Why: Make ecowaves.
When: Tues.-Fri., 4 p.m.; Sat. & Sun., 11 a.m., noon, 3 & 4 p.m.
Where: Riverside Park at Pier I, W. 70th St., at the Hudson River (212-870-3070).

SEA
Melville Day
What: Celebrate the life and lit of Moby Dick author Herman Melville on land and sea.
Why: Whales and tales.
When: Sat., noon-4 p.m.
Where: South Street Seaport Museum, 12 Fulton St. Info at reservations@southstseaport.org or 212-748-8786. Reservations required.