In Panama I would save the squash seeds and dry them - as much as it was possible to dry seeds in 95% humidity - and package them for the Seeders, Peace Corp's Panama's seed exchange program. Back home in the Midwest I have been composting the seeds. Then I realized what I should have been doing was toasting the seeds! The only problem is, I only get maybe a cup of seeds out of any squash. It seems like a waste of time and energy to bother toasting them.