Forget the chain stores. This is the place to buy everything for that special kidlet. Need a stroller? They have dozens. A crib? You can get the lace-covered kind, the traveling sort, or an old-fashioned one. Lavin's is even better if you speak Spanish; its name is taken from a prerevolutionary baby store in Havana and the help habla Español. As a bonus there's enough technology to satisfy even the most geeklike dad. Try the gizmo to help stop bed-wetting. When the baby pees, a light goes on. The cost: $39.99. Or there's First Sounds, which lets you listen in on the womb. Also for $39.99. The best of the best is the Little Havana store, which has a bizarre, covered parking lot and a quirky design. But you can also try the larger shop in the Falls. Either way, infantile fun awaits.