grammar - Do you use "there is" or "there are" before a list?

When I use "there are:" (with a colon) to introduce a list starting with a singular item, should I use "there is" or "there are"?

According to grammar rules, I should use "there is" if the following item is singular, but in this case the colon introduces a plural group.

For example:

In my room there [is/are]: a bed, 2 chairs, a table, 2 carpets and a wardrobe.