But it is a surprisingly useful accessory for the already converted.

Another eminently useful accessory for active video practitioners is supplemental lights.

Slit pockets in the legs of his skinsuit held a stiletto and other useful accessories.

It is such an obviously useful accessory that the company is thinking of making it available on base models.

I've always found a periscope to be a very useful accessory in these conditions.

They create decorative jewelry and useful accessories made out of natural materials (seeds, plants) which are sold at the Centre.

They have become useful accessories in bicycling as a sport and as a recreational activity.

There are many useful accessories available which will give curtains a professional finish.

Bike, beach towel, hiking boots and binoculars all make useful accessories.

One of the most useful accessories for classroom use is a remote control unit.