What happened to the Deathly Hallows?

Answer 1

Harry kept the Invisibility Cloak so that he could pass it down to the next in line. He left the Resurrection Stone in the forest clearing where he had dropped it before his "death" and never went back to look for it, nor did he tell anyone else where he put it. He says in the final chapter of DH that he would be returning the Elder Wand back where it should be, which, I presume, is Dumbledore's grave, so that, if Harry died a natural death, its power would be broken. Hope this helps.