Since my resources in the old thread no longer work, I've reuploaded them to Megaupload.
Decapitalisation patches: decapitalise the names of all Pokémon, items, moves and abilities. Safe to patch onto an edited ROM (as long as you didn't repoint any of the above data).
All Platinum Sinnoh Pokémon indexed sprites (quality may differ, alternate forms not included)
LZ77-compressed versions of the above; not for use unless you know what you're doing
Credit to Mastermind_X for the Platinum sprites.