Two packs found at the back of the cupboard. About 10 years old but i took one out and it still seemed to be elastic. Wouldn't recommend them for orthodontic use as they are so old, but thought i would see if anyone wants tiny elastic bands before they go in the bin.
Also found some orthodontic wax which is used to prevent braces from rubbing gums when they are adjusted. Again, really not suitable for the original use, but offering in case it could be used for something else.