They can order online. Gift registries help the bride and groom get things they want and avoid things they do not want -- like three of the same gift.

VOA: special.2010.08.09

Additionally from today get an extra special gift with Three.

ENGADGET: Windows Phone 8X, Galaxy S III Mini and Xperia J available on Three UK today

If the music school sells the violin within three years of your gift (but not during the same calendar year), you (usually) must include the amount your initial deduction exceeded your cost as income in the year of the sale.

FORBES: Charitable Changes

Why not just restrict what the charity does with your gift for the next three years?

FORBES: Magazine Article