We've seen that the Wizarding World has taken on a lot of what Muggles have made for their own uses. While some of these have been adapted without much issue, some have had strong opposition either for secrecy reasons (like a Wizarding equivalent of the BBC) and/or from Pure Bloods who view it as derogatory and disgusting to take and adapt something from the Muggle World for Wizards to use.
(Something I find rather ironic and amusing considering the ancestors of said Pure Bloods would - according to JK - willingly mess their underwear from both ends before the Wizarding world adopted Muggle plumbing. Regardless of them using magic to get rid of the evidence, the fact that grown witches and wizards did this is gross - and yet Pure Bloods claim Muggles are 'filthy').
Getting back on track, is there anything in the Muggle World that isn't in the Wizarding World but you'd like to eventually see get adapted into it?
For me, I'd like to see Wizardkind adopt the internet on a wide scale; they already use it in Muggle Studies and aside from the Wizarding version helping to modernize the Wizarding World a bit, I have an image in my head of young witches and wizards playing online games with muggles and witches/wizards around the world - which I think would be fun to watch, especially if tempers start to flare.
Another idea would be for Wizards to adapt one of the retired Space Shuttles (leaving behind a duplicate) to act as a magically enhanced exploration vehicle, which would allow Witches/Wizards who want to explore space; potentially landing on other planets that may have magical species/materials which can be studied. After all, considering the only report of alien creatures in the Wizarding World is that of the Moon Frogs from a Quibbler article (which means they're likely not real), it might be something Wizardkind could look into.
Looking forward to hearing your opinions.