I cheated a little. I used lifestyle points to upgrade my sims town sign to level two and ran out, desperate to build my teen idol mansion I looked online for advice. One user said their sims found a magazine and microphone resource changing soooo, if your really desperate keep changing your teen idol sim into normal clothes and undressing them. I spent 5 hours and wasted my day off lol continuously repeating this, found all off the first two resources, I also found many other items like wind, magma and at least 3 pieces of gold along with untold rocks and bronze, bamboo ect. The second day I did this for another hour and found 2 cameos again. I also admired paintings, the grandfather clock and the elf statue (from the Christmas task) and found another cameo. Or you could just keep playing music for ages.