How much do you think muggle relatives can take part in the wizarding world?

Muggle borns in their immediate family have their parents and siblings (and grandparents and cousins in their extended family, but I assume knowledge of magic is restricted to the household), wizards sometimes marry muggles (which I assume means sometimes a wizard will have muggle stepchildren).

So I am curious how much wizards are permitted to share their world with their muggle relatives. Squibs are of course different, while socially marginalized and incapable of fully taking part in wizarding society, I don’t think there is anything they aren’t allowed to know, but I think many choice to integrate into the muggle world if they can.

I assume that adult wizards are more or less allowed to fully use their magic incapable front of their muggle parents, siblings, and spouses. So I assume they will likely benefit from spells like the mending charm for broken things, spells to help with house work, healing magic, magical transportation like apparition or Floo. Muggle borns of course are restricted from this before they turn 17.

But I assume that they would likely also have magical things in their homes like moving pictures, chocolate flogs, wizard’s chess, broomsticks, potions, owls, Tales of Beedle the Bard, etc. How much do you think muggle relatives are allowed to use such things? Other than when they have muggle guests (which then obviously they have to lock up such things), I assume it is permitted.

In addition, how much access due to think muggles have to wizard spaces? We see muggle parents are allowed to be with their children while shopping for Hogwarts in Diagon Alley, but outside that, due you think wizards are allowed to escort their muggle family into magical spaces? Can a witch take her husband on a casual shopping trip to Diagon Alley, or to see a Quidditch match?