Every week Jake provides a theme for creative inspiration. Bloggers post their interpretations before the following Sunday, when Jake announces the next photo theme. Jake’s Sunday Post this week is Collectibles (check out everyone’s interpretations of the challenge here). As a kid I collected rocks and minerals, and I still enjoy an occasional rockhounding expedition. Last week I visited the Carnegie Museum of Natural History in Pittsburgh, and they certainly have an impressive collection of rocks and minerals. Here are two that I would like to add to my collection!