Free Printable Bubble Letter O Freebie Finding MomBubble letters in small letters are used to incorporate a fun and artistic aspect to designs. Balloon alphabets in lowercase have got a attractive and casual vibe. The can provide an impression of vibrancy and creativity to various tasks like notes, posters, as well as logos. If you want to convey a vivid and cheerful message, using ball characters in lowercase could be a great selection.