Certainly you could take an SDK like Substrate or pymclevel and either scan chunks for the most recent modification time, or a cluster of "diverse" item entities, and it would probably be easy to write. I don't know of any existing program that will do that, however.
If you're not up for writing code, your best alternative is probably to open your world in a recent version of MCedit and search for a dense cluster of entities.
Same thing happened to me I had basically everything. I got out of the cave and looked for my house i coud'nt see it so i went on a mountain so i could see my house. I saw my house i mined down and i accidently fell of the mountain and died. is there anyway to get them back????