I'd say bikinis, but you did that already. how about drawing them in different outfits, like kimonos or Christmas outfits? If you need situations, how about them taking a stroll through a mall or eating at a restaurant?

id be willing to help with ideals

Kinda forgot to respond to this, but there's really nothing stopping you (or anyone else) from providing suggestions if you want.

its ok ive been bit busy rl so i had forgotten that i posted this

Still need ideas? Here's a few for you:

1. Perhaps have two characters dress up as each other?

2. What about a character with huge breasts drawing? Not a drawing of that character, but that character in the act of drawing a picture. How would they manage that?

3. What about showing off the closets of a few characters? What type of clothes they would wear, and how they would organize them.

I may come up with more later, but I hope these interest you!

Sorry I forgot to respond to this too... none of them really 'appeal' to me all that much, but I appreciate the thought! Fortunately, I have found a couple ideas in mind already that I may get around to eventually.