If you're lucky enough to have access to a pile of old bricks, put them to use in the garden. New bricks are not expensive and work well for small projects. No special equipment or skills are needed. The bricks are small enough to be carried around easily compared to cinder block. Bricks are not susceptible to rot and will outlast wood. Bricks laid in a bed of sand make a lovely patio, but that's not their only use in landscaping.
The space between the garden and the lawn is a bother to hand clip with scissors or to drag out the weed eater for trimming. Create a mowing strip by laying the bricks flush with the ground as an edging between the flowers and the grass. The wheels of the mower will roll across the bricks and allow you to edge your lawn while you're mowing it. As a bonus the bricks act as a barrier to keep the grass from spreading into your flowers.
Bricks add a rustic note to a garden when used as an edging. Stand the bricks vertically for a taller edging or lay them horizontally for a shorter edging. Dig a trench before laying the bricks. If you would like a sturdier edging, lay two bricks side by side with a third brick on top.
Lay a path through a garden to keep the mud off your shoes. Plan on 24 inches wide for a one-person path through a small garden or 36 inches wide for a larger garden. Dig out the path about 3 inches deep so the bricks are slightly above ground.
Create a raised bed with bricks. Stack the bricks so they're staggered. For beds more than four bricks high, mortar between the bricks for stability. Build a small raised bed by laying a row of four horizontal bricks flat on the ground. Add another layer of three on top of the four. Add a layer of two bricks and finish with a single layer of bricks.
Some yards have different levels. Build interesting stairs between the levels with bricks. Stack the bricks no more than four high without using mortar. Make sure the stair is comfortably wide enough for someone with larger feet.
Circle the bricks three bricks wide and high around an area away from brush and overhanging tree limbs. Add a 3-inch layer of sand in the bottom of the circle. Always keep a bucket of water handy after you've lit the fire as a precaution.