You need a funnel to direct a wild-flowing fluid into a barely-accessible opening, but you also need two hands to steady and hold the fluid container. If you can get the funnel to wedge in place so you don’t have to hold it, consider yourself lucky — otherwise you either need a helper or a tool like the UniFunnel.
Made from a glass reinforced polyamide, the bright yellow Unifunnel resembles a pair of spring-loaded pliers. When you release the handles, four stabilizing prongs expand to grip any opening from 1-1/4″ to 2-1/4″. Then just insert any standard funnel into the adjustable rings and pour.
A single UniFunnel will run you $15 shipped. Note: Not advisable for beer consumption.
UniFunnel [Corporate Site]