Things you'll need:
2) DVD case, or something similarly flat and lightweight.
3) Coffee table or countertop.
A) Break up the buds and put a pile on the magazine. The magazine is represented here by Donkey Kong and the floor he's standing on
B) Slowly pour the seeds in a little ~10cm waterfall onto the DVD case, angled towards each other like the floor above, and let it waterfall back another ~4 inches onto the table.
The seeds will bounce pretty far but you need room to move or the green matter will pile up and start to catch them. Super low tech, but it works wonders when there's a large volume to process quickly.