Philips & refund amazon
I started SE with Starbucks-They are very easy to do I'm sure there are many FREE methods out there
Goodluck on your adventure to SE
Try starting with food companys, maybe you could order something from dominos and say it was cold, they usually give you a gift card, sometimes you get a refund or a free meal, discount if you are unlucky, i worked there and their policy states they HAVE to give unsatisfied customers what they want
For practicing and honing your skills you can literally use google to search for companies to hit. Search for things like:
"Issued a replacement"
"Sent a replacement"
"Replaced my product"
And whatever other phrases you can think of relating to getting a replacement product.
Limit your results to maybe the last 6 months.
What you'll be left with then are, amongst other things, reviews from people explaining why their product was replaced. You can also check Amazon reviews for same.
Look for the common faults I.e. my milk frothier doesn't heat my milk, my rechargeable led torch doesn't recharge any more etc and get onto customer services of the relevant companies acting pissed.
Some will want there faulty items back so be prepared for that, others will issue a replacement with less hassle.
Enjoy your free shit!
Go to McDonalds if you get chased they will be too fat to keep up anyways...