You can scale the scrubber down to any size you need, but if there is not air movement through it then it is not going to do anything but take up room. If you are looking for a passive type odor reducer, there is a gel called ona gel that is supposed to work well.

Most of the seedbanks you read reviews of here are legit, other than a few customs confiscations and bad communication at times, they are still in biz. Stick with one of the better reviewed ones (seedbay, gypsy, cannaseur, et. al.) and it'll be all good. If you have an alternate address (friend, sibling, etc) you can send the seeds to, all the better. Use a company name and C/O on the address to distance yourself as much as possible, but it is not illegal to recieve anything in the mail. You have no control over what someone sends you. Just make sure they can't trace a credit card payment to you and its all good.