On the cuphea the flower will split open in the back, near where it is attached to the plant, the stamen with seeds on it will poke out of the split. When the seeds start to turn brown they are ready to pick. I take a small dish hold it under the flower and snip off the whole thing as the seeds fall off very easy.

Anemones don't have pods per se. They are actually just seed heads with the seeds clustered in a ball (many species' seeds have tails, so it may look "hairy").