Many grocery brands for things such as tea, chocolate, cereal, and butter have promotions where there is a code on the box. You enter code into their website and get points. Build up enough points and you can get special offers, such as discounted day trips or free gifts. Do you ever use these codes?
I do with some products such as Anchor, where I can get baking supplies, but a lot of the things you can get from offers like these aren't usually of interest to me, and you need to collect a lot of points before you can actually get anything.
No, I never seem to find the time. When my first daughter was younger, I would collect the barcodes to redeem for toys, but I don't bother any more as added postage fees are almost the same as picking out a toy myself.
I don't but my Mother does. She has received so many gifts in the past that I'm seriously thinking about collecting the vouchers myself. She's received a YSL lipstick, Elemis skincare products as well as other designer make up products. It seems worth it.
No one intends to read these sorts of things, but they are impossible to miss on the packets. They will be big, bright, and bold messages telling you about free tickets to theme parks or gift items, and then to see the back of the box/website for details. I assume, you just don't buy any brands that do that sort of thing.