Stapleless Staplers are a more efficient way to bind paper. The models available today are designed for small binding tasks (5-7 pages max).
This model is popular in Japan. It is available from the Japanese importer JBox for $13.50.
They also have a sculpturesque model available for $34.50.
Older models of stapleless staplers or “paper fasteners”, like the one above, could bind many more pages but no longer seem to be available. Let us know if you have seen these for sale.