Students often struggle with metric conversions. I use this document to print numbers for students to use in order to bring the math used during conversions to life. Kinesthetic learners respond well to this approach and the numbers are all in different fonts, which makes it more fun.
Basically, print the large numbers and have students hold each digit up to create a number of your choice. Then, as you go through the metric conversion with them, have one student be the decimal point and move between the students holding up each digit of the original number to show the movement of the decimal place during metric conversions.
Use the smaller numbers to make small bags of individual student packets and have struggling students use a penny or some other manipulative to represent the decimal place. Allow them to use this packet of numbers and the penny when doing conversions until they are comfortable enough to use the more traditional stair-step/"King Henry Died By Drinking Chocolate Milk" approach.