Well, a cute toaster cartoon is often appealing because of its simplicity and creativity. Maybe it has a unique shape or is shown doing something unexpected, like singing or dancing. Also, if the animation style is smooth and the colors are soft and inviting, that definitely makes it more appealing.
Perhaps in a more abstract way, if we consider 'pulp fiction' as a form that often plays with juxtaposition of different elements, a toaster could be one such element. It could be used to add a touch of the ordinary to a story filled with crime, mystery and adventure, just like how in some pulp fiction movies, they show small domestic details among all the chaos to make the world seem more real. The toaster can be that small domestic detail that anchors the otherwise out - of - this - world pulp fiction narrative.
One possible theme could be transformation. The bread goes from a simple slice to a toasted, perhaps even 'better' version in the toaster. Another theme could be the relationship between the two. Are they friends? Enemies? There could also be a theme of anticipation. The bread awaits its fate in the toaster.
Well, the toaster scene in Pulp Fiction can be seen as a small but important part of the film's fabric. It might be used to create a sense of place and time, perhaps it's in a diner or a kitchen. It can also be a way to ground the characters in a more domestic setting for a brief moment, even though they are constantly surrounded by danger and the underworld. This little scene with the toaster can add depth to the movie's overall portrayal of the seedy underbelly of society and how normal things still exist within that abnormal world.