I always use some sort of tiny treat to entice them to show proper test-taking techniques (looking on own paper, mouths quiet, no shouting out answers, not going ahead, etc. etc. etc). I give them a handful of treats that they can eat after we have "appropriately" completed a particular section of the given assessment. I also can snag a treat if any of the expectations aren't upheld (just for the record- they DO NOT like this).
I was searching high and low for some sort of enticement for the end of the year 14 page LA assessment (yes, I am serious) and found a jar of sprinkles left over from our ice cream party...I quickly worked my kindergarten magic and turned them from jimmies for into Brain Sprinkles for test taking. I wasn't sure if they would buy into it, BUT, boy did they ever. A spoonful (well, not quite that much) of Brain Sprinkles turned them into the best, little testers I could ask for. It is a teacher's dream come true: inexpensive, readily available and a little goes a LONG way. To make it all the better for you, I made a label as a jpeg so you can make it the right size for your bottle of Brain Sprinkles. Swing on in to Mrs. Miner's Monkey Business to grab the freebie start sprinkling tomorrow!