Can you think up a mnemonic device for the order of the planets from the sun—including dwarf planets?

Easy:
“Hey Google, what is the order of the planets?”

My Very Educated Mother Just Served Us Nine Cheese Pizzas Having More Eggplant

I can’t think of anything more mnemonic than @zenvelo‘s answer, but good luck on your astronomy test! ;-D

Why not just remember the planets in the right order?
A memonic device only complicates something fairly simple to memorize.

If you can visualize the planets, they seem to come in pairs.

Mercury and the Moon (though the moon isn’t a planet, it is bigger than a natural satilite and is similar to the planet mercury).
Venus and Earth
Mars and the hypothetical similar-sized planet Phaeton which is now the asteroid belt;
Jupiter and Saturn the ringed gas giants
Uranus and Neptune which are the ringed ice giants

Pluto and any other kuipner belt objects

Mercury is racing around the sun as fast as he can. Why? So he can catch a glimpse of Venus. Earthlings find this amusing, but Mars is willing to go to war over it. Jupiter just sits in the SUN.