Visiting the museum may not be for everyone but if you like it then this is just a reminder that its there. I love the museum, its cheap its fun and there's always interesting things to see and it gets allot more fun after you leave school.
Number of people: 1+, this is something that's OK to do by yourself, and maybe kill some time.
Time of day: Day time activity, sometimes night time, when they have special events.
Duration: 30min-3hrs, you can have a quick troll round or a slow one, depending on the size of the museum also.
Budget: $0 - $40, some museums cost money, some are free some have donations, usually no more than $15, sometimes there are special events that may cost more.
Nothing much to it, easy and fun trip, if you want opening hours, costs, and locations you can pretty much find all this on the internet, and you can always call up if not.