Here’s a deck of flashcards for Lily de Silva’s Pali Primer.
They work in the flashcard program Anki, which is the best free/open source flashcard program I could find. (I’d be interested to know if you have another favorite.) Anki can be downloaded at anksrs.net.
UPDATED: through lesson 17: 657 cards, but that includes English-to-Pali (which should not be your main effort).
I will replace what’s here (and update this post) as I complete the grammar.
I have used Eisel Mazard’s 2008 reformatting of de Silva’s text, which can be downloaded for free at www.pratyeka.org/silva.