The Hoover Portable is representative of an era in the late 1960’s where all vacuum manufacturers attempted to store as many tools as possible right on (or inside) the canister itself. The design trend replaced what I still think is a far better option: provide a separate tool caddy to carry all the attachments - as was done in the 1950’s.
The ongoing attempt to place tools onboard causes more problems than it is worth. The vacuum becomes heavier. The tools are forced to become lighter and smaller and “wimpier”. Some tools are combined into combo tools that don’t work as well as the separate ones do. Tool storage elements and clips and slots on both canisters and uprights are often not well designed and tools are either too difficult to remove or too loose to secure them properly. Some of the nubs (eg Eureka’s) meant to hold an attachment wear out with time and can no longer maintain their “grip.” Tool clips on wands and hose handles (hello Kenmore) get in the way of sliding the wand or hose under furniture and into tight spaces. And tool holding devices on uprights create more opportunities for scratching cabinets and table legs and wall corners as you navigate the cleaner around and under obstacles....especially the slots that store wands on the sides of the uprights.
My advice to vac-makers: go back to separate tool caddies that the user can bring out of the closet whenever needed. They could even be made of recycled cardboard similar to the old ones made by Hoover and Eureka.
Or for the entrepreneurs out there: Come up with a way to supply vacuum manufacturers and vac stores with a variety of tool boxes and caddies made from lightweight, yet strong, recycled cardboard. I’d start with offering Miele a cool caddy design for the wide array of tools and filters they have.