Dropping in shot glass was how I did it up until recently. I recently found this "seed germination humidor" from home depot for like 2 USD. I decided to give it a shot, not expecting much. It calls for just soaking the pods and putting the seeds in straight...i used some old bag seed to test it and am surprised with the results...
Unopened...
And a couple shots after 96 hours (4 days)..
Instead of pre-germinating, this thing called for a lot of water (you get the peat moss pods compressed into small discs...then put water in the tray for the pods to soak up) so I put the seeds directly into the soaked pods. I dropped seeds at night so they would be able to soak for 8 hours before lights came on next morning.
To be honest I didnt expect much of anything...maybe 1 or 2, but i have 6 outta 12 popped so far (on bag seed no less) so im def gonna continue to use it. You can just keep the tray and buy more pods. Also they make various size trays, mine happend to be 2x6. but ive seen 2x12, 6x4, 6x12 and others.