I have LOTS of ideas for this. An air conditioner, make the drawer have a little storage (like 3 rows), the refridgerator
have a storage just like the workbench, the microwave cooking stuff but there's like 1 row and you put stuff there to cook and the microwave will just cook it, and finally the oven should have 1 row and you put something to cook there but you need no fuel to cook things. Thats it.
Edit: Excuse me, AN air conditioner I mean. Fixed that.
First, I saw your Texture Pack download button. I think every image in it is from vanilla MC. The only thing that was different was the terrain.png. Since your mod is now ModLoader compatible, I think you don't have to actually edit the terrain.png. Most of your stuff still don't have any use other than display, right? And you still don't know how to make them work like furnaces or chests. Maybe you could ask modders like Alblaka, Nandonalt or TehKrush for stuff about that. When you do learn how to add the functions, I'd like to suggest some:
Refrigerator - Can make ice(already suggested)/Lets the player stack food items inside the fridge.
Microwave - TehKrush already made this, but maybe you can try to make a similar one...OR, you can make yours turn on and off. On will have light level 3 or so.
Oven - can't really see it clearly from the pic. ;p
Stool - If When you advance in modding, you could make it sit-able and heal the player like on peaceful, but the player won't be able to do anything else other than open the inventory and stuff.
Sink - Now this one I will SURELY have in my kitchen. Using bucket on it should give you water bucket. And using water bucket should empty it.
Table - like Risugami's Shelves, this should allow the player to display his/her items.
TV - Maybe act like Harvest Moon PS' tv. Turning it on will show you a random gif file.(Not sure if possible)
The thing I liked the most was Trashbin. It's because I have lots of stuff I want to throw away.
I also read something about the 2 shelves(open and close) being 2 different blocks(Does that mean it uses 2 different IDs?). Maybe you could make it like Nandonalt's Cheese Maker block.
Lastly, making each item individual downloads would give us options on what we like, or you can make a props file or something for that.