I needed a nice outfit for my mothers upcoming wedding - I am playing music in it so I need to look presentable (more than my usual hobo-chic), and I didn't have a nice non-work dress, so I bit the bullet and went to buy one. Found a beautiful, flattering dress at the second-hand store for $20, which I can wear again for my sisters winter wedding in October (will add a wrap, different jewellery and hairstyle to change it up). I dug around and found the pair of heels I bought for $3 last year (they were on mega clearance, are beige and relatively comfortable, so I knew I'd need them sometime!). Also pulled out a necklace/earring combo I was given more than 10 years ago - it was pretty tarnished and hadn't been worn for ages. I googled and found a home method for cleaning silver jewellery (heating salt and aluminium) which worked wonderfully, leaving the jewellery clean and new-looking. The whole outfit looks lovely, perfect for a formal occasion, and only cost $20!
Also, i really wanted a coke zero at work (they are sold in the fridge in my staffroom), but resisted and drank my water instead. $1 win!