Nearly all of these spells are homebrew. A few (although I'd be hard-pressed to remember which) are derived or inspired by other sources, mostly net-based, but still re-balanced.
These spells are mostly either pure flavor, a reaction to an imbalance in the spells as they exist, or to fill out some schools that are sparse at a few levels (necromancy and illusion in particular). In this connection I should mention that we re-balanced Scry to have higher DCs and invisibility to be a higher level.
My favorite spell is actually the first, Animate Body Part. Never actually been used, but I love the flavor of an animated dead hand slowly crawling down a corridor to deliver a vampiric touch to a sleeping victim.
-BM