You could make one out of a safety pin, or even a paper clip. Then heat it over a fire till it glows red (loop only) and dip it into the water so you have a fleece inside the loop, not unlike that of a bubble blower.
Step one, place the fleece onto the agar plate so you have a nice drop in the top right 1/3th of the plate, and strike it out all over that top 1/3th. Do NOT apply any pressure on the loop, or you will cut into the plate. Just let it rest on top and angle it towards the direction you are sliding.
Step 2, sterilize the loop by holding it into a flame till red glowing, and let it cool.
Step 3, Strike out 5 lines from the bottom half of the top 1/3th part towards the bottom left
Step 4, sterilize the loop by holding it into a flame till red glowing, and let it cool.
Step 5, Strike out 5 lines upwards to the left from the bottom half of the first 5 lines you made
Step 6, sterilize the loop by holding it into a flame till red glowing, and let it cool.
Step 7, Strike out 5 lines from the top half of the second 5 lines you made to the upper right, and wiggle the bottom line towards the center of the plate. Be careful NOT to touch the parts you already hit with the loop.
Step 8, sterilize the loop by holding it into a flame till red glowing, and let it cool.
And you are done. This ensures you will end up with free colonies instead of having a big blob on your plate.