I am a habitual wizard player and I can't stand any of the spell sheets I find for them. So I ended up making one of my own. It has lines for spell names to be listed as they are scribed into your spellbook, all 0-level spells listed at top, cross out the ones you don't have if a specialist. Then when filling slots with memorized spells I just mark a dash for each slot filled by a particular spell (magic missle get's two slashes and mage armor 1 for example). There is an empty slot that can be marked with a slash denoting how many slots the wizard has left open to be filled later (one of the wizard's strongest abilities as a preparation caster and several utility but never-used-often-enough-to-warrant-regular-memorization-of spells).