Mixed drinks will work wonders. 25% alcohol 75% juice, add or subtract alcohol as you see fit.

Blue WKD, or many cocktails; although they can be powerful they often don't taste strong.

Kahlua is a great drink, especially with milk. Tastes just like choc milk! You can also get creative and mix in banana liquer for a banana/choc drink. Every mixed drink combines three flavors: strong, sweet, and sour. A good drink balances all three, so they lose their individual characteristics and form a gestalt entity with a unique gustatorial identity. A cocktail also folds in a counterpoint of bitter. Anotherwords, the way to get rid of the alcohol taste in drinks isn't to use less alcohol, but to balance it properly with other flavors. First, strong. You need to aim for neutral spirits. That's vodka, white rum, gin--anything that's clear and at least 80 proof. Your goal is to disguise this flavor, but not to overpower it. With a properly prepared drink, the strong flavor acts as a sort of base, a medium in which the sour and sweet interact. You will get so lost in sweet/sour dynamic that you'll never focus on the strong background. Second, sweet. Use these sparingly. You have several options here. Most commercial orange and cranberry juices will end up in this category, as opposed to sour. So does Rose's syrupy sweet lime juice. And grenadine. And Cointreau. And soft drinks. And tonic water. And, of course, simple syrup (sugar mixed with water and heated 'til it becomes viscous). Third, sour. Your main allies here are lemon juice and lime juice. Preferably fresh. In a pinch, plastic fruit-shaped bottles of juice will work, as long as you apologize to yourself later. If a drink recipe calls for lemon or lime juice, do not use sweetened juices like Rose's unless the recipe specifically asks for them by name. Remember, the idea is to balance flavors. Sometimes as small a step as rubbing the lip of a glass with a bit of lemon rind can drastically change the flavor of a drink. There are so many options out there. If you dislike the taste of alcohol stay away from hard liquors like rum/vodka/whiskey. Try and experiment with different drinks and I'm sure you'll find some awesome drinks you like.