BBC News Online
Socialist MSP Rosie Kane will be camping out in a make-shift street bedroom to raise cash for the homeless.
She has invited people to join her on Saturday in George Square, Glasgow.
Ms Kane is raising money to support Scotland's Homeless World Cup team which will be taking part in the challenge later this month.
There will be 32 teams competing in the tournament in Gothenburg. Ms Kane said the people taking part were the "pride of Scotland".