Yahoo Geocities- simply miss it. and also Yahoo in general. My current yahoo mail is chock a block with spam mails. plus their ads.
Xerox Ventura desktop publishing software- that was cool when book publishing was required.
Motorola T90/91 basic mobile phone. superb and handiest phone used. Current Moto is smart but not unbeatable.
Most importantly old BSNL (India) Landline tariffs- you could talk for hours and still the billing would come per call-wise. Simple unbeatable !!
Non- Microsoft Keyboards- here they are out of market. THe MS keyboards go out of tune/get stuck over time.
Softwares that would never needed to update- These days it is a harassment to see every software on my PC requiring to update. Now its gone to mobile phones. God knows what is it that they do in updates.
Tap water- 2 decades ago we would drink water straight from the tap or just plain filtered. Its impossible now. The water is too contaminated and needs added filtration devices at home/work. or bottled water.
Paper bags at the grocery shop. They've vanished giving place to cheap plastic bags. And many products are now using plastic wrappings that would come with paper ones.
A more silent neighbourhood- these days its high intensity horn blaring.