Amazon Prime Day freebies: here's how to get $45 additional cash plus more

Complete your Prime stamp card for $10
A super easy way to score some free credit for Prime Day. Amazon has issued a new stamp card feature for Prime members with a simple checklist of actions. To check the full list you'll simply need to make a Prime-eligible purchase, stream a video on Prime Video, listen to a song on Prime Music, and borrow an eBook on Prime Reading. All these steps are super easy to do and, aside from the purchase, free for Prime members.

Upload to Amazon Photos to get $15
To get $20 assigned to your Prime account, simply download the Amazon Photos app, upload at least one photo, and turn on the auto-save backup feature. That's all you need to do to trigger the condition for trying Amazon Photos - after which you'll get an email confirmation for your free credit. This is another super-easy way to save some cash in the run-up to Prime Day this year, even if you're not planning on using Photos later.

Spend $75 on P&G essentials to get $20
Another good way to get free credit for Prime Day. Amazon is giving all Prime customers a whopping $20 in Prime Day credit if they purchase more than $75 of P&G branded products. Since these include everything from beauty products to washing detergent under such brands as Olay and Cascade, this is a great way to save some cash by shopping essentials you'd already buy otherwise.

GrubHub: one year free subscription
Amazon knows you're not just hungry for deals over Prime Day, it knows you're also hungry for some tasty treats on the side. That's why it's teamed up with GrubHub to offer Prime members a whole year of premium membership on the house. Eligible with the GrubHub+ app, you'll get a full year of free delivery, exclusive promotions, and donation matching.

Amazon trade-in program: 25% off new devices
Prime Day is an amazing time to pick up Amazon own brand devices, everyone knows that. Did you know that you can get discounts and cold hard cash by trading your old devices though? If you've got an old tablet, phone, or laptop that's nearing its life, why not hand it over to Amazon in part exchange for a new one. For a limited time Amazon will recycle your old device for free and potentially give you either an upfront discount or store credit for your account.

Audible: three months free
Right now, Prime members can try Audible for free for 90 days, instead of paying the usual price of $14.95 per month. An Audible subscription grants access to thousands on Audible Originals, audiobooks and podcasts. You also get a credit each month that you can use to download and keep any title of your choice.

Amazon Music Unlimted: four months free
If you've never tried Amazon Music Unlimited before you can now get a four-month membership for free. Considering this service usually costs $8.99 per month, we're talking about a significant saving here. The service offers 90 million songs ad-free in high quality as well as millions of podcast episodes. If you're sick of Spotify's bugs and foibles then this is a great chance to try one of the bigger music platforms on the market.

Kindle Unlimited: four months free
Amazon's subscription services don't just cover music and TV, you know - there's also Kindle Unlimited, which is perfect for readers. This service features a huge library of not just ebooks, but magazines and audiobooks too. Mind, it's not as expansive as Audible when it comes to the latter but it's a great pairing with a new Kindle. Right now, Prime members can try this service for a while four months on the house - that's a total saving of $34. Not bad.

Prime Video: two months for $0.99
Annoyingly, Amazon isn't offering its premier on-demand streaming platform for free. Instead, you'll have to pay $0.99 for Prime Video with this Prime Day promo. What a rip off. We're of course joking - this is an amazing deal and a great opportunity to try out on of the best (and most expansive) streaming platforms on the market. Just take a look at its vast library of movies, shows, and channels and decide for yourself.

Amazon Photos: unlimited photo storage and 5GB video storage
A great perk that not many Prime members take advantage of - did you know you can back up all those precious family photos for free? There's no limit to quality or resolution with the Amazon Photo service so it's well worth checking out if you're an avid photographer. You will, however, only get 5GB of video storage for free.