The paint pens below are Drew’s medium of choice for most of his paint projects. Many times he uses both Sharpie and Uni Poscas together depending on his supply of pens. Both are excellent and totally compatible. All are water-based, non-toxic, odorless and totally safe for kids to use. Buy them as a set or replenish as you need them. Once you try ’em, you’ll love ’em!