'Des tennis' are most probably 'des (chaussures de) tennis' which are tennis shoes in English. That could also stand for 'des (terrains de) tennis', which are tennis courts.
"des tennis" are the sport shoes called sneakers in English.
tennis courts
"des couteaux" means "knives" in English
'des visiteurs' means 'visitors' in English.
"des jumeaux" means 'twins' in English. (these are male twins; the feminine is 'des jumelles')
Some gloves.
des chaussettes are 'socks' in French.
scissors
boots
markers
The English word for "Des Crayon" is "The Pencil".
"Eau des merveilles" would be translated "water from the marvels" in English.