enlarged for easier viewing
There are little seed sower gadgets you can buy to help you plant small seeds, but this works in a pinch. You don't have to spend any more hard earned money, and you won't have to come up with space for it.
This is the tip of an old butter knife. I have the tiny seed sower, but I couldn't find it. So, I opted for the butter knife to help me separate those itty bitty buttercrunch lettuce seeds. It worked great!