Knit Acorn Cap is a hat that was published in the marketplace by RobloxRoblox is a notable creator or influencer verified by Roblox Corporation. Learn more. on August 31, 2016. It was originally obtained when a Roblox card from London Drugs was redeemed in September 2016. It was later obtained when a Roblox card from Sainsburys was redeemed in September 2019.[1] As of December 3, 2019, it has been redeemed 6,377 times and favorited 114 times.