Salt is naturally hygroscopic, meaning it absorbs excess water vapour from the air before it condenses on windows. Place small bowls or jars of table salt on windowsills throughout the home to try ...
It can be difficult to find oversized curtains for an affordable price. IKEA doesn't disappoint - there is one curtain that will fit sliding glass doors.
If you believe your Windows desktop could use a boost of efficiency, you might want to try a tiling window manager, such as FancyWM.