Here's a simple-to make tool that will be invaluable for screeding and levelling new lawn areas of topsoil and grass seed.
Or use it to prep fine gravel for paving areas so you can do it in comfort, rather than bending to use a plank of wood.
Next to the dog, this could become man's best friend.
Step 1
Measure and cut your sheet of plywood to length. I cut mine at 480mm by the width of the ply 1200mm. Now measure up 100mm on the two outside edges and find the top centre point at 600mm. This will give you the shaped angle you need to cut along.