I grew up with a lot of 'posh' things that at the time, I just thought were weird because my friends didn't have them.
Table laid each night with cloth napkins... and we each had our own napkin ring.
(But we were eating dinner in the kitchen, not in a fancy dining room).
Dishwasher, most of my friends had no such thing - I just thought it was loud and smelled a bit horrid sometimes and it was my job to load/unload it.
Skiing holidays in winter, beach holidays in summer (but in hindsight the cheapest resorts possible, driving over, end of season etc etc)
Things I thought were exciting/beyond reach...
Coke/fizzy drinks
Sweets
Chocolate
Crisps (except Hedgehog flavour obviously)
A pony (ohhhhhhhhh my heart longed for a pony)
Glass coffee tables (it was the 80s. The fact almost all my friends had scars from falling through them did not reduce their value in my eyes at all!)
Scrimpy saving things parents did
We never had white paper, we had paper printed/copied onto on one side that my Dad brought home from work (he worked in local government as chief architect, there was probably a lot of what would now break GDPR on those sheets of scrap paper!).
My parents would happily tip-dive local tips for things, thats how we got a Scalextric track and cars one year!
Drawing/colouring stuff again mostly came from my dads Office and was the 'nearly all used up' stuff, if we were caught even LOOKING at the drawer of new unopened stuff there'd be trouble!
Skis, ski boots, walking boots, walking britches, outdoor jackets and kagoules, caving kit, bicycles, canoes etc...all handed down from parents friends kids. As my parents were the oldest and last in their friendship group to have kids, there was a LOT of hand me down loot to be had!
So I didn't think any of this stuff was posh as it was either weird (napkin rings!) or old and scruffy by the time I got it.
Probably the poshest thing we had was a cottage in North Wales - of course there was no stopping at motorway service stations (not even for a wee, there were laybys for that), and when we got there it would be cold and damp, I'd have been carsick, and any food left there would have been nibbled by mice in our absence. The weekend would be spent either being hauled up mountains or helping parents do various building/construction chores (or very memorably, at an emergency doctors with one or other parent having a digit sewn back on!).
From the ages of 6 to about 12, I really longed for a weekend in front of the TV (haha, nope) trip to the park (pft!) and an icecream from the icecream van (fat chance!).