Preheat the oven to 350°.
Cream the butter and sugars with a mixer on medium speed.
Beat in the egg.
Add flour, baking powder, and salt, and beat until combined.
Gently fold in toffee bits, chocolate chips, marshmallows, pretzel pieces, and potato chips pieces.
Use a cookie scoop to scoop the dough, form it into balls with your hands, pressing the mix-ins into the dough.
Bake for 13-15 minutes. Cool on a cooling rack.