To start the new year, here's a compendium of some oscillators found during the previous few months that never got included in a posting.
First are some Period 6 Oscillators found by Nicolay Beluchenko.
Next is a Period 30 Rotor found by Karel Suhajda that requires 4 sets of P30 Glider Guns to generate the sparks necessary to turn it into a rotor. Finding a better stabilizer would be a worthwhile small project.
David Eppstein has contributed a Period 7 Oscillator and a Period 10 Oscillator, both of which have an isolated two-bit spark appearing in the upper right corner in generation 6 and 9 respectively.