Even better, use icon fonts. Unlike image sprites which look fuzzy on retina displays, icon fonts look smooth and sharp on retina display devices and can be made any size. Here's a icon font set made for bootstrap. It even includes a paper clip.
I hope I don't sound like an advertisement, but I'm really excited about the possibilities of icon fonts. I'm not associated in any way with the group that created font awesome.
Even better, use icon fonts. Unlike image sprites which look fuzzy on retina displays, icon fonts look smooth and sharp on retina display devices and can be made any size. Here's a icon font set made for bootstrap. It even includes a paper clip.
http://fortawesome.github.com/Font-Awesome/
I hope I don't sound like an advertisement, but I'm really excited about the possibilities of icon fonts. I'm not associated in any way with the group that created font awesome.