The Vela pulsar is a neutron star from a supernova that exploded 10,000 years ago. It spins 11 times a second. The Crab Nebula along with the central Crab Pulsar formed 1000 years ago. This pulsar spins 30 times a second. If there's a famous Crab Pulsar with a nebula, is there a Vela Nebula in which the Vela Pulsar is within?
The Vela Pulsar (PSR J0835-4510 or PSR B0833-45) is a radio, optical, X-ray- and gamma-emitting pulsar associated with the Vela Supernova Remnant in the constellation of Vela.
First line of the Wikipedia entry on the Vela pulsar.
It's obviously much more spread out and diffuse than the Crab nebula because it occurred more than 10 times as long ago.
Here it is as an optical image, roughly 6 degrees across and almost entirely filled by the supernova remnant. (The arrow marks the position of the Vela pulsar, which is distinctly off-centre.)
The first picture on the Wikipedia page is
which shows the pulsar wind nebula around the Vela pulsar. This again has an analogy with the Crab pulsar (and looks similar) and is due to the interaction of relativistic particles emitted by the pulsar with their surroundings and the strong magnetic fields. The picture is taken in X-rays and is only a few arcminutes across.
This source, https://apod.nasa.gov/apod/ap190110.html, an astronomy Picture of the Day states that the Vela remnant "is likely embedded in a larger and older supernova remnant, the Gum Nebula".