Costume "old TV" made do it yourself the skilled worker from the Instructables website under the nickname MrsCrankipants will be useful not only to the child, but also, for example, to the promoter. And if you do not make holes for the neck, arms and legs in it, you get an element of the interior of the apartment, office, trading floor, decorated in the fifties.
The craftswoman takes a cardboard box of suitable sizes and cuts holes in it for the neck, arms and legs. The husband of the craftswoman makes a pocket for the tablet, which she pastes with a film under the tree:
The craftswoman weaves a metallic thread into the fabric. For placement on top of the fabric, it collects a lattice of thin metal rods. Acquires two spare handles for the gas stove, and uses the handle found on the sidewalk as the middle one. Adds additional decorative elements from metallized cardboard (not corrugated), designed for posters, and now it turns out something very similar to an old TV:
Again he takes cardboard for posters, but this time not metallized, cuts out blanks from it, rolls up legs from them, which are pasted over with a metallized film from below:
For the manufacture of the "antenna" the craftswoman again uses thin wooden rods, as well as a toy (reduced) basketball ball, painted with metal paint, and tin packaging from the pie.
The source of the image is a tablet showing an episode of Lawrence Welk and His Champagne Music (1955) from the television show The Lawrence Welk Show (available on the Internet Archive site), but a regular printout will do.
The costume is ready, the craftswoman puts it on the child:
So with simple homemade You can feel like an old TV in youth and even in childhood.