What does bilbo baggins remember from his childhood about gandalf

Bilbo remembers the fireworks!

“Gandalf, Gandalf! Good gracious me! Not the wandering wizard that gave Old Took a pair of magic diamond studs that fastened
themselves and never came undone till ordered? Not the fellow who used to tell such wonderful tales at parties, about dragons and goblins and giants and the rescue of princesses and the unexpected luck of widows’ sons? Not the man that used to make such particularly excellent fireworks! I remember those! Old Took used to have them onm Midsummer’s Eve. Splendid! They used to go up like great lilies and snapdragons and laburnums of fire and hang in the twilight all evening!”