Can't remember the name of this Obi-Wan book

I had a Star Wars novel about a young Obi-Wan as a kid but never finished it. I can't remember the name of it.

It's probably from the Jedi Apprentice series but I can't be sure.

I remember a sentence from it. Obi-Wan had arrived with his bags and another student (maybe?) says, "What's he got in those bags? Bombs?" Or something to that effect.