Yes, an entire multi-verse lives inside google docs - unsure of how to tackle the legal minutia! We want any and all homebrew creators to be able to safely and confidently publish their content :)
An interesting issue with our group is that the most experienced player also has a virtually eidetic memory. If I use a "standard" monster (from any of the many 3.5 Monster Manuals and other sources), he'll know the stat block in it's entirety. Even if he doesn't mean to, it's hard for him not to act to take advantage of a monster's weaknesses.
So most of the monsters I use are either completely homebrewed, or re-skinned standard ones with just enough changed to throw him off - swapping energy types around for attacks & resistances, blending the attack methods of two similar monsters, or just completely changing the description, habitat and habits even if the stat block is very similar.
An interesting issue with our group is that the most experienced player also has a virtually eidetic memory. If I use a "standard" monster (from any of the many 3.5 Monster Manuals and other sources), he'll know the stat block in it's entirety. Even if he doesn't mean to, it's hard for him not to act to take advantage of a monster's weaknesses.
So most of the monsters I use are either completely homebrewed, or re-skinned standard ones with just enough changed to throw him off - swapping energy types around for attacks & resistances, blending the attack methods of two similar monsters, or just completely changing the description, habitat and habits even if the stat block is very similar.