Papa Bear's shop vac can either suck or blow, depending on where you hook up the hose. Angel Bear forwent the hose part, and attached the rigid tube to the "blow" side. Popped a handfull of acorns in the tube, and hit the on button.
Yeah, the acorns did fly out, far enough to pelt the side of the house. A later version of the Cannon using the flexible tube had the added benefit of a more acurate aim, and covering the acorns with dirty, old grease from the BBQ (Papa Bear had used it to clean out the bottom of the grill). Our white siding now has a really interesting pattern of black splats on it.