This morning, I downloaded
a customizable flashcard program
Genius helps you memorize things. Genius organizes your information and carefully chooses questions using an intelligent "spaced repetition" method that’s based on your past performance. It performs fuzzy answer checking and even highlights errors visually.
and
a hiragana card-set to go with it. I'd already found some online tools for this, but local is handier. I'm finding that cross-training between this type of random recognition and muscle/spatial-memory (copying out lines from the syllabary chart) seems to be helpful. At least it's keeping me from too much boredom.