This place in Gerrard Square looks like a sad Dollarama wannabe but has some surprisingly decent items for discount prices. Plant seeds that grew just fine and had an expiry date (unlike at many dollar stores) were only 50 cents a pack. Blown glass watering bulbs, plant pots and basic work gloves are all fine.
I got a few cans of black rust paint here for $1 each that were just as good as from Home Depot. Their hardware section isn't that bad either. Less selection than Home Depot but reasonable quality for the price.
They also have some home decor and basic kitchenware. Stay far away from the cheap toy aisle and knock off electronics.