I was away at my cousin's wedding Thursday through Saturday. Between visiting family and acting as familial labor (read: free and obligated semi-slavery), I had no time to create anything.
And today I had nothing come to me. I did, however, finish reading Heroes of Horror. The monsters were not inspiring to me. I did like the bane wraith but I disliked its ability to automatically know the names, appearances, and presumed locations of your loved ones without a saving throw. I thought I might use the dusk giant for the IH Asgard idea but they neither fit nor did they inspire me with interesting abilities.
I did have a bit of an idea for a corruption eater that lived symbiotically or parasitically with a humanoid. Corruption eaters have the ability to eat taint from creatures. If they eat enough (defined as gaining enough temporary hit points to put them above their normal maximum), they can spew a cloud of corruption that taints other creatures. Of course, in an easily manufactured situation, the corruption eater can subsist solely on one introduced point of taint in a willing human. Eating the one point of taint gives it enough reserve to spew a cloud that, if a save is failed, gives the human the one point of taint back. This can go on indefinitely. I suppose that counts as a kernel of an idea that can later be expanded.