I'm doing sentences already, but I want to have a resource where I can just mindlessly drill verb conjugations to keep in practice.

I've got this spreadsheet that I'm filling full of verb conjugations, and I want to figure out an effective way to drill it without going insane setting up an Anki db with about 15 fields and a jillion card models.

This is all stuff I learned about 3 years ago in Japanese classes in grad school, so it's not like I'm learning new material here. I'm just trying to remember old material. So far, I'm counting around 12 different forms ... has anyone already done this, or do you have any ideas on how to do it? I don't feel the need to "ease" into it, because it's all mostly review for me. But I'd like for it to ambush me with a reading of a verb I may not be familiar with, and force me to figure out what conjugation/form it is.

I'm using "The Handbook of Japanese Verbs" as guidance for this, if that helps. Here are the different forms I'm tracking:

ない/あ　stem (negative)
ます/い stem (conjunctive)
う stem (dictionary)
ば (え)stem (conditional and imperative)
え (imperative actually gets its own line as well.)
お/おう stem (volitional)
て form
た　form (たら, たり)
potential
presumptive (copula only)
causative
passive
causative/passive

I could just let the sentences do their thing, but I want to nail the verbs down on the side, anyway.

Edit: minor edit.

http://homepage3.nifty.com/jgrammar/gram...r_vcon.htm is probably more information on Japanese conjugation than anyone could ever possibly want to know.
As for a way to drill them, I'm just outright not that savvy, so I'm of no use. I'm not sure I see the need to drill them anyway, though. It seems like studying for the sake of studying, instead of for learning.

I have been in your position before. I tried drilling conjugated verbs, and at least for me, it honestly didn't help much. Thats what sentences are for. Having said that, I whole-heartedly recommend drilling the dictionary forms by themselves and leave the conjugation to the sentences. My reasoning: alot of times when I'm reading Japanese, I overfocus on the kanji that makes up part of the verb, and even though I will correctly read it, this is due more to the presence of kanji than anything else. Drilling verbs in kana will help your speaking and even listening comprehension a bit because you will be focusing on the phonetic structure more than relying on kanji or contextual clues.
Also, I completely understand your desire to mindlessly drill stuff. At my peak, I was studying Japanese close to ten hours a day, and I can tell you for certainty that mindful learning for any excessive length of time takes a toll. As you have mentioned, drilling isn't a great way to learn so much as a way to restock and stimulate material from prior exposure. All studying is inherently stressful for extended periods, whether passive or active, but varying degrees certainly do exist, to the point where drilling isolated words can be almost relaxing compared to other methods. And so, even though active learning is probably always "more beneficial" in a sense, too much of anything begins to result in symptoms not unlike those produced by Chinese Water Torture. And that is one of my biggest criticisms of the 18-24 hour AJATT method; which is to say that excess is never an ultimstely positive thing and certainly never "fun".

Ok, point taken. Saves me the trouble of screwing around with another set of cards, anyway. I was thinking about just doing something to change things up a bit, but if it doesn't help, I'm not going to bother with it. For the most part, I wanted to refresh my memory with regard to all the various verb forms, and I hadn't really found anything else to play with.

Those "production cards", where it says a scenario in English, have a big flaw for flashcards and that's that there's so many possible right answers, and you're only listing one. Maybe good for a tourist who wants stock phrases, but not much good if you want to really understand the language.

I think it's probably wisest to just forget I posted anything, and stick with sentences for now, unless you just want to add verbs as vocab. Move along, move along, nothing to see here.