Summarize the following:
A set of good mallets will help you bring out the best sounds from the instrument. Mallets can be found packaged with the instrument or at music stores. Many mallet heads are made of plastic, while others are made of nylon, rubber, or metal. Plastic mallets are the perfect choice for beginning players. Plastic and nylon mallets are a useful tool for all players. Metal mallets produce a better quality sound but require more of a deft touch. Many kids play a glockenspiel while sitting. As you advance, the standard is to play the glockenspiel standing. The keys are set in a frame which makes the instrument ideal for the ground or another flat surface. Glockenspiels may also be placed on larger stands so you can play while standing. Find these at music supply stores. Before you play, make sure you feel comfortable. Bending over the keys is painful and sets a bad habit for beginners. Keep your back straight as you reach your hands out towards the keys. Adjust the glockenspiel until you can reach all of them without bending over or reaching up. Sometimes a tough day or nervousness can spill over into playing. Before you begin, take the time to shake out your arms. Practice turning your wrists and shrugging your shoulders until you feel loose. When you pick up the mallets, your grip should not feel tight. Tenseness will wear out your arms. You'll also strike the keys too hard.

Summary:
Buy a pair of plastic mallets. Rest the glockenspiel on a stand or table. Stand or sit up tall. Relax before playing.