Font Awesome

You can find a complete list of icons at fontawesome.com

glass
music
search
envelope-o
heart
star
star-o
user
film
th-large
th
th-list
check
times
search-plus
search-minus

Material Design Icons

access-point
access-point-network
account
account-alert
account-box
account-box-outline
account-check
account-circle
account-convert
account-key
account-location
account-minus
account-multiple
account-multiple-outline
account-multiple-plus
account-network