I have a mouse... standard rolly-on-the-desk kind XP I don't do digital art (besides spritework sometimes) because the only art program I have is MS Paint So really it doesn't matter too much for me anyway
Logitech optical mouse, specifically this one [link] but I hate it. >_< I like using ball mouses better. Less jumpy, as long as you keep it clean, and you don't have to recharge them. Never used a tablet before.