Clearly you need to re-read Song of Solomon. Pretty toe-curling.
Hmmmm...I don't remember any sex toys mentioned.
Give me a break. It’s not a how-to manual.
Then there is the book Sheet Music which is recommended by many Christian authors on books about marriage. It's pretty explicit about what is Biblically acceptable sexual behavior between a husband and wife.
There are others. The fact is, God wants married couples to have great sex. Every place in the Bible that mentions married sex, it is compared to the level of intimacy God desires to have with His children.
As long as it does not involve pornography, pain or other people, it's all acceptable as long as BOTH husband and wife agree.