Always on my laptop.....
I have an office at home that looks outside and I love to scrap there......but I will roam around also, in my big fluffy chair, at the kitchen counter, outside on the deck, laying on the bed......
At our lake house I have a little corner desk that is just my little space. I can see outside, watch the geese and make sure the fish aren't bitting
I have scrapped in alot of places. The car, a van all the way to Florida, a semi truck, my porch swing and ONCE even on a beach in Cancun....I had a sudden burst of creativity