I switched to soap for purely selfish reasons
as it kills bacteria in my puts better than shower gel. 6Yo DS was jealous of my soap so i put some in his Christmas stocking and he was over the moon! I now have a child who loves the bath and smells of lavendar 
We don't use wrapping paper. I hemmed bolts of Christmassy fabric and made different sized drawstring bags some years ago and they come out every year. We all love seeing them again. I was on a thread about 'do you wrap stocking gifts' and said no because it is wasteful and the stocking is wrapping enough - you'd think i had admitted to skinning cats to make boots and then kicking puppies with them! I also have a handful of these bags for birthdays- they are great, save money and space and are multi-use.
We all have refillable water bottles, a necessity here in Spain due to the scorchio! And luckily can dry clothes outside pretty much 350 days of the year.
I have sewn cute tote bags for shopping and made a couple of really durable bags out of broken umbrellas - strong, waterproof, pretty.
We don't buy ds magazines with tat. We don't go to Macs/BK with their free gifts. We do go to a local place that gives kids a balloon, lolly, pack of 4 crayons and big colouring/activity sheet, so he isn't completely deprived!
Spain doesn't really go in for 2nd hand clothes, so charity shop shopping isn't an option. A shame as i love shopping this way. We do pass outgrown ds clothes to friends and receive bigger stuff for him from others, but these friends aren't Spanish. They have an obsession with the new which understandable as parents/grandparents grew up under Franco. I'm in Catalunya which was severely fucked over.
Anyhoo... We try and do what we can. I have never heard of metal straws so will look into them. I think it is better for dc to drink juice from straws as it goes straight down the throat and spends less time swishing around teeth. I could be talking bollocks though 
Due to post-birth pain i cannot use a mooncup but have made a batch of reusable pads.