The Husqvarna Viking Sapphire and Designer series machines have a needle plate that pops off with the tip of a screw driver in the front corner of the plate. The other machines, Singers and other HV machines have 2 screws that are very difficult to remove as there is limited space to get a screw driver in there.
My Bernina 1031 requires no tools to remove the needle plate, just drop the feed dogs and push the plate off toward the back; after you're done cleaning it just slide it back on.
A never ending bobbin would be great.