At one point Alice says ‘I love my love with an H … because he is Happy. I hate him with an H, because he is Hideous. I fed him with -- with -- with Ham-sandwiches and Hay’.
I have thus produced this illustration, celebrating the letter ‘H’ and including some hay and a ham sandwich in the top left corner.

The right hand illustration represents the six impossible things that the White Queen declared at one point when she said that she had “sometimes …believed as many as six impossible things before breakfast’.
So I have brought together six well-known impossible figures as representing this, with an egg for breakfast in the front (an allusion to Humpty Dumpty).