I am wondering what I could use for a slime recipe that is quick to make, cheep and easy to get at a grocery or department store?

Classic: applesauce, oats, pudding!

A few boxes of white cake mix, water, and food coloring. Mix well. I like 2 cups water per box for a nice smooth slime, but your mileage may vary.

cake batter slime is super easy, You can use food coloring or mix in a can of colored frosting, mix in various other things like Cool Whip or marshmallow fluff to change the consistency and thickness. Have fun with it that's what I do. For those wondering the deep blue is from a Duncan Hines Blue velvet cake mix I found, you can get it online but it's a bit expensive.

Mixed all together? Any specific ratio?