Combine the steel nippers with the the copper wire to make the copper shot. Drop the steel nippers to put them back on the grass. Move back to the kitchen and select the mousetrap to take a mouse whisker. Return to the device in the basement and add the vinegar, antique clock, mouse whisker, mistletoe branch, empty bottle, iron nail, garnet and copper shot:

Select the green Done button. Use the glass retort on the cauldron to fill it with pink liquid. Combine the note from the yard with the glass retort to make the magic potion. Drink the magic potion and the magic of time travelling can now be selected from the Magic Generator.