Tomorrow I am planning on posting:
More Lovecraft monsters for Holmes basic! I'm gonna ask the OSR google+ group for some recommendations, but if you want to comment what you want to see here that's also good! (Also if you ever have any requests or suggestions in general for what you want to see/suggestions for 30 minute dungeons feel free to comment and tell me!)
Another 30 Minute Dungeon
And maybe some magical rituals for D6 Dungeon Crawl, though they could easily be adapted for any OSR system.
If you have anything you want to see please tell me! I like posting often and new ideas always help.