Generates a moniker, some signature items, and a spell list for a wizard that draws from B/X's base magic-user spells, a few from other sources, and a collection of original spells. I prefer for campaigns to take the spell list in the book as a jumping-off point, from which we can dive into variation and invention.
I use this generator for cowboy names, so I imagine the "moniker" of each wizard is something they take on when they enter magician society.
The generator shows the spellbook of a 14th-level magic user. To get the spellbook for a lower-level magician, you can just ignore spells of a higher level than they could cast.