Museums are trying to grab shoppers’ attention and get their share of holiday spending. Now there’s a day for that. “Museum Store Sunday” was launched in 2017 and while it’s still not as well-known as Black Friday or Small Business Saturday, its backers are trying to gain momentum for the Sunday after Thanksgiving marketing program as museums continue to recover from the pandemic declines in membership and attendance. Advertisement “Museums extend their experience with a gift shop at the end that is also full of beautiful things, but it’s also part of the museum’s revenue,” said Melody Caban, a Dallas-based...