It would be interesting to take this up a level next year and do a Patreon Box with donated seeds from members. I would donate. Of course, gathering the donations and sending out the seeds would be a lot of work for someone. I bet it would get a lot more people to support the site though.
Edit: After posting this, it occurred to me that it would make the site a paid seed distributor, which might be risky since this is international. So not such a good idea.