Examples:

• Well, I wish I had one of those right now.
• I wish I had one to fight for me.
• I wish I had one of those in my size.
• I wish I had one of those.
• I wish I had one as a pet.
• And that's why I wish I had one more moment to talk to him.
• I wish I had one just like her.
• I wish I had one when I was growing up.
• Boy, I wish I had one of those.