Pocket knives, watches, Velcro. Besides cheese, you won’t find a single hole in Swiss design.

You can add Sigg Kidz bottles to the list.

The sleek beverage containers are made from a single piece of aluminum with seamless walls that don’t leach. So when it gets mysteriously lost in your car for a week, fresh milk won’t taste like fermented apple juice.

They’re also safe to use over and over again without worrying about BPA leakage. (Neurotic types rejoice.)

The bottles come in three sizes and a smorgasbord of adorable decorations.

So when your little darlings start fighting over them, you can make like Switzerland and stay neutral.

Available at Peekabootique, 1306 Castro Street, at 24th Street (415-641-6192 or peekabootiquesf.com). To see styles, go to sigg.ch.

GO
Autumn at Filoli Festival
What: Fruit tasting, live music, puppet show, hayrides, and pumpkin carving at sixteen-acre historic estate.
Why: They’ll fall for it.
When: Sat., 10 a.m.-3:30 p.m.
Where: Filoli Center, 86 Canada Rd., at Edgewood Rd., Woodside (650-364-8300).

PLAY
The Fall Girls Athletic Extravaganza
What: Sports clinics like basketball, tennis, and yoga for gals ages 6-12. All skill levels.
Why: Foster a try-athlete.
When: Sat. Registration, 9:30 a.m.-10 a.m.; event, 10 a.m.-2:30 p.m.
Where: Kezar Pavilion, 755 Stanyan St., at Waller St. (415-753-7032).