Some readers have told us our Halloween masks were a little too frightening. If you're still scrambling to pull together a costume, here are four options that are more treat than trick. Best of all, you'll be able to get what you need from your own closet.

What to wear: Khaki jacket and black turtleneck Who you are: Rick Astley How to play the part: Memorize "Never Gonna Give You Up." You'll be singing it all night.

What to wear: Shower cap, towel, iPhone Who you are: "Naked Conversations" author Robert Scoble How to play the part: Engage everyone in conversation. Ask them if they want to get naked. Hope they don't take you up on it.

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What to wear: Three-piece suit Who you are: Mashable CEO Pete Cashmore How to play the part: Make sure you have a girl on each arm. Tell everyone you're a blogger. Refuse to explain what you actually do.

What to wear: Jumpsuits and aviator glasses for two Who you are: Larry Page and Sergey Brin How to play it: Maverick and Goose? So old media. With a fighter jet parked at Moffett Field, Larry and Sergey are the Valley's new Top Guns.

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