I thought I would share the method I use for cupcake batter - the transfer of batter from the bowl to the actual cupcake liner. I have tried MANY methods over the years, and this method, I personally find to be the easiest. It might make it easier for you, too if you struggle with gooey drops of batter on your cupcake pan. . .
I use gallon size bags - the kind that comes with a handy tie. I recycled an old plastic juice container by cutting off the top 2 inches or so - to give me a rectangular shaped container.
I drape the plastic bag over the cut up juice container. Much like one is putting a trash liner in a garbage can.
Then fill with batter.
Tie a knot on the open end of the bag.
Smoosh the contents of the bag away from a corner.
Snip a teensy bit of the corner off. You can always cut more but you can't undo a huge opening. Smaller is better in this case.
Use the bag much like you'd use a pastry bag with filling to fill the compartments. Look, no mess! :)
When the bag is empty, just toss the bag (or rinse and recycle appropriately). Hope this tip is helpful to someone. :)