How to transmit audio with a laser pen
Read things you'll need
Remove all batteries from the laser.
Connect a clip lead to the inside of the laser pointer where the battery touched.
Usually there is a small spring to which you can attach the clip lead.

The other end of the battery usually connects to the case of the laser. Since there are many different styles of laser pointer, you may have to experiment with clip lead placement to get the laser to work with the new external battery pack.

How to flavour couscous
Pick a non-instant couscous.
If you are looking to add flavor to couscous, avoid the instant varieties. They cook too fast to really absorb flavors in the pot.

Instead, opt for a non-instant couscous. Israeli couscous, which has larger granules, is especially good for picking up flavors and adding texture.

How to play football with yourself
Cancel your plans.
Friends will not be needed tonight! If you had no plans, skip to step two.
Buy a football.

Or, if you really have a good imagination, get anything that can function as a football. Tennis balls, basketballs, even a cardboard box could work.

How to use solar energy to heat a pool
Use a long, dark-colored hose to fill up your pool.
The longer it takes for water to make its way through the hose and into your pool, the warmer that water will be. While fifty feet of hose is generally sufficient, additional length means the water will have even more time to warm up.
The added surface area of the hose collects more heat, as well. If you use a dark-colored hose, the water can get even warmer because dark colors absorb more solar energy.