Aloha Tonski

Back in the day, we used gravity and an inclined plane to roll them out.
Kept a wooden tray under the couch for seeded weed.
Tilt the tray to about 15 degrees, crush the bud with your fingers over the high end.
The goodies will mostly stay, the seeds will roll.
You can use the edge of a credit card to shuffle out the last few seeds.
Shoebox lids were ideal for deseeding
Got some green mexican once that was a bear to de-seed, so we used a kitchen strainer in a bowl The sieve with the bigger holes produced a very uniform end product that was perfect for rolling joints.

No toss dem seeds.
Plant 'em everywhere.
Set Cannabis free!

Enjoy,
Weezard da ol' fart