Hand-held flash cards are still the best way to learn and review declensions and conjugations. When learning these important forms students should always carry the current card with them so as to be able to pull it out and quickly consult it anywhere, anytime.
One good way to form the habit of incorporating Latin practice into the day is to use a timer (e.g., a cell phone or, my personal favorite, an hour glass) set to a convenient interval (say, an hour) and, upon noticing the competition of the interval, stop whatever one is doing, recite the current paradigm once or twice, reset the timer, and return to one's other activities. This simple approach makes exposure to Latin short but frequent throughout the day, and frequency of exposure is the key to language learning.
