Don’t worry about being a basket case! Just use this hand-woven, willow wicker one. It can carry your picnic lunch or other small loads. Adjustable leather straps fasten it to your bicycle’s handlebars. Designed for adult bicycles. Size: 15.3″ x 9.4” x 11.4″/38.86 cm x 29.87 cm x 28.95 cm; and can carry up to 15 lb/6.8 kg.

I haven’t tried using such a basket, although I suppose a handlebar bag comes close. I used to have one for the hybrid, before I got the road bike. It was great to carry my on-bike food during long rides; and this basket can do it, too.