Portable Speakers

Hello All, OK so i got a girlfriends b-day party on Saturday, and I know she wants some portable speakers for her ipod/mp3 player, looking for something that sounds good, durable enough for the beach”sand” ect…. Im not looking to spend alot of money. Thanks for your help
Answer #1
My friend has this:
http://www.aqsound.com/store/en/product/iBlock-iPod_Speakers-Red/product_details/?utm_source=NetworkIntellect&utm_medium=cpc&utm_campaign=3109&source=kelkoo
Its smaller and just clips to the bottom, very good and good sound quality. Are you looking for something bigger, like larger separate speakers, like on a dock?