Where can i find a 3.5mm (Female) to 2.5mm (Male) adapter

[mista ting]

i want to connect my earbuds which is 3.5mm into my sidekick 3 which only has 2.5mm plug. any one know where i can find a 3.5mm (Female) to 2.5mm (Male) adapter? i cant find it anywhere

[Mr. Roboto]

one of hundreds of google hits:

http://www.palmaddictstore.com/xproduct.php?xProd=96