I love to use different emoticons while chatting, you can use symbols for different emoticons like " : ) or : P or :D " etc.
Or simple use post a sticker option and add free stickers from sticker store there you may find many stickers Biscuit in Love , Mugsy In Love, More Tuzki, Chumbak's Back, Despicable Me 2 they are really funny and interesting !!
others you can find here:-
http://www.wikihow.com/Make-Smileys-on-Facebook-Chat
