Nice catch!
In the first 30 seconds or so of Star Wars: episode 3 Anakin’s and Obi-wans jedi fighters are seen streaking through a chaotic space battle. Suddenly, something small flies across the screen, crashing into a star destroyer. Evidently George Lucas had seen an initial cut of that sequence and remarked “wow, you’ve got everything in there but the kitchen sink!”. And , of course the people at ILM took those words to heart. So, in the final cut of that sequence, that small object impacting the star destroyer is, you guessed it, a kitchen sink.