The Easy Funnel

this could be useful but not so usefull

Bottle (x2)

hot glue

Cutting tool (i had a Dremel when i started but then it broke)

Simple

use a cutting tool to cut it off

poke a hole though it, continue until its big enough to use a Dremel or sandpaper.

now to sand it so its a clean edge.

now take the cap and the bottle top and glue them together with hot glue