If it was one shop that captured James' attention (apart from the Quidditch shop) it was Diagon Alley's famous joke shop. He often spent his pocket money within there, buying all sorts of items to prank his brother and father and couldn't fathom going off to Hogwarts without a collection of things to entertain him.
James had a look around at the items they had on display, some of them new and some of them he had purchased before. He laughed at some small children playing with the Pygmy Puffs, and walked towards a collection of Anti Gravity Hats and the Skiving Snackboxs. He really didn't know what to take with him, but he was sure that if he asked his father, he would send him so more. His dad was always up for a laugh.
He found some things that amused him and walked up to the counter, waiting for it to be free. He grinned at the shopkeeper.
"Hello. Could I purchase these please?"
He placed one Reusable Hangman, one Skiving Snackbox, one Decoy Detonator, one set of Extendable Ears and a Spell Checking Quill on the counter in ground of the assistant.
After purchasing his items, James continued to have a look around. He really wanted to buy a packet of the Wildfire Whiz-bangs, but decided to save that for next time.