My other hobby is Scuba Diving, we use loads of these stainless steel "Jubilee" (that's what they're called in England) Clips.
If anybody wants any I can get them for between £5-£10 depending on what size you want.
However I'd be suprised if they held up particularly well. Have you used it much Gibraltar? If so how springy was the material and did it return well to it's original shape?