Get a bit of local history along with some green re-using and a great patio. The city of Minneapolis will sell you reclaimed - and crazy heavy - granite pavers.
Removed during street construction, they are available first come, first served and come in three sizes:
Small, grey granite in two sizes: 6" x 4.5" and a mere 13 lbs. or 10" x 7" and a mighty 30 lbs.
or large rose granite, below, with 10" x 7" pavers that weigh in at 19 lbs.
All are $2 each. Get them here.