I love Nuvo drops in all their many forms. I like the Glitter ones to add bling, especially to hearts, graphic designs, characters' clothes and jewelry, etc. I like the Dream Drops to add pearlescence to the same types of things. I like the Jewel drops to add translucent color that just livens up objects like centers of flowers, accents within larger tableaux, and especially to created a dotted background (sometimes I put down three dots in an equilateral triange to make a plain field a little more snazzy). I love the Crystal drops for the same items as above but when a more solid (not translucent) effect is desired. I love the self-leveling feature; it makes making perfectly rounded little dots so easy.
I especially love the Vintage colors. I lived in France for a time and find that the Pumice Stone and the Earl Grey are especially evocative of many objects in terms of how they were painted (architecture, furniture, etc.) of the area where I lived. I also love the Postbox Red, Regency Green, and Worn Navy.