How can me and my girlfriend have fun without doing anything too ual?

Me and my girlfriend have decided to wait till we've been together for a longer time before we have . So we still make out and bite at each other and playful stuff like that, but we just aren't going to do anything like or anything ual like that. We really like to be adventurous and playful though, what are some things me and her can do together that will keep the "sparks" but not go too far? please give me lots of answers. thanks.