Ice Cream Cone blue-barian flavour - can be obtained from Thawing Dragon Lord , Barbarian Arena Quest level Greenhorn
Ice Cream Cone Chilly Cherry flavour Available from the Barbarian Arena Quest level Scrapper, The Ultimate Challenges Quest
Ice Cream Cone (Venorean Dream) - Buy from Boozer (Venore) 10gp (Melts after 2 min)- Part of the Kissing a Pig Quest
Ice Cream Cone (Crispy Chocolate Chips) Obtained in The Ultimate Challenges Quest, Warlord Mode.
Ice Cream Cone Mellow Melon Flavor The item is no longer available. It used to be an award from Cipsoft for participating in competitions. In the past, some tutors were awarded. In this link you will find people who have obtained them.
Sweet Strawberry and Velvet Vanilla - It is considered to be an unreachable item.
Source : TibiaFandom, Tibiopedia