There are two different types of curtain holdbacks that may be used to tie curtains back away from the window and let in more light or a breeze during the summer; these include actual fabric curtain ties, which typically match the curtains for which they are used and must be tied and untied in order to hold the curtains, or curtain hooks, which are typically metal hooks mounted on the window frame. Fabric curtain ties may be a good choice if the curtains are not frequently untied, otherwise it can be annoying to constantly need to tie and untie them. Metal hooks are a more convenient option for daily use.
Fabric curtain holdbacks are often preferable because they occasionally come in the package when the curtains are purchased. In addition, they do not require any modification to the wall or window frame, which is especially important if you rent rather than own your home. They add aesthetic appeal to the curtains as well, and of course serve a functional purpose for holding the curtains back from the window. It may be difficult to replace them if they are damaged, however, since it might not be possible to get the same material, and may require replacing the entire curtain set.
Metal curtain holdbacks are some of the more common options chosen for use in the home. These typically look like decorative hooks; the flat backing is installed into the wall or window frame, and the curtain may simply be lifted and placed behind the hooks. Installing these curtain holdbacks is typically not difficult, but it will often require the use of a drill since placing screws in a wooden window frame can be difficult. This also has the potential to damage the window frame, and may not be allowed by a landlord in a rented home.
You may choose to purchase metal curtain holdbacks in stores or online, though there are often more options available online. Simple, modern designs with clean lines are common, as are floral designs. For children's rooms, sports themes, flowers, or butterflies are especially popular. They may be available in different colors to match as well, such as painted variations, brushed nickel, or a shinier silver appearance, just to name a few. They may also be available to match other types of decorative curtain hardware, such as the curtain rod and mounting brackets at the top of the window, and may be purchased in a set.