Roll up, roll up! Come and have spin of 10:10's Great Modern Art Tombola. Win a Vivienne Westwood, get a Gormley, or pick out a Picasso.

Yes, that's right ladies and gentleman, for the price of only ten pounds sterling you could be the proud new owner of a Guardian-commissioned work by one of 20 exciting British artists – plus we've thrown a couple of Picassos into the mix for good measure.

For one week only, the kind people at Hay Festival of Literature and Arts have given us shelter underneath a specially-built turf-roofed building, designed by RRA Architects, to launch this exciting fundraising competition.

If you can't make it to this year's literary love-in, fear not. An online version of The Great Modern Art Tombola is in the pipeline. Watch this space...