I give the same gift twice a year to my brother -a fruitcake! He's so difficult to buy for and once I made him a cake and it was the first time I've heard him be enthusiastic about a present (since his digital calculator watch aged 10!). I now make him a birthday and Christmas cake. His birthday is in the summer so they're evenly spaced apart.
My dad and his sister often sent each other the same presents as each other but different each year e.g. candlesticks on year, a calendar the next but (AFAIK) no discussion between them. They didn't particularly speak to each other much or see each other more than once a year.
I had an elderly great-Aunt who always gave each of us a bottle of talc from M&S. Mine was always fern, in a green bottle. Dsis always got peach Pity M&S don't sell it any more, tempted to buy a bottle just for the nostalgia.
My gran. Every year without fail my Xmas present has always been accompanied by new pjs, slippers, underpants, a box of chocolates and a deodorant and shower gel set. I look forward to it every year. She always gets my children pjs slippers and a chocolate Santa too. My MIL and her Gran have a gift that they have passed back and forth every year for about ten years. Along with an actual gift. It started off as an accident and now is a running joke
When I was a teen my aunt used to buy me a salon-sized shampoo and conditioner from the salon she worked in. Got it at cost, I suspect, so not a huge outlay to her, but a massive treat for me as it was mega-expensive and way beyond my budget. I used to make it last 6 months, it was the most thoughtful gift ever!
My gran still buys my husband a box of hankies every year. We've been together for 17 Christmases - that's a lot of hankies! Luckily he's the only guy I know under 60 who uses them, so for him it's a perfect present!
A member of DH’s family always used to buy me a particular set of boots toiletries as she knew I liked the smell of them. The year she died I bought a big box of them for my own Christmas treat and made them last as long as possible. I’ve still got some of the body lotion - I use the tiniest amount I can sometimes, the smell reminds me of her
Years ago I said I liked Maltesers when I was around my DM's side of the family. Now every birthday and Christmas I get a box/bag of Maltesers from each of them! It's put me off Maltesers a bit having so many of them
Scented candle from my SIL (DH's brother' partner; it's from both of them but I'd bet substantial sums she is the present buyer). It took me a while to work it out, but I'm sure it's because DH is a smoker and she thinks I need it to clear the air. She doesn't know that 1. I HATE the smell of scented candles. 2. DH smokes outside
I once gave my brother the same gift two years in a row. I don't know what I was thinking, lol. It might have been because he liked it so much (Bottles of hot chilli sauce.) Anyway, he definitely has different gifts this year!