Create drawings for each form of a verb. Have each student create two sets of drawings -- one for past tense and one for present tense. For example, using the verb "to be," the student should create drawings for the following conjugations: "I am," "you are," "he/she/it is," "we are," "you are" and "they are." Using "to walk" as an example, have them create drawings for "I am walking" and all the other forms of the verb.
Create a set of cards with the various conjugations for any verb you like. Mix the cards and set them on the table. Have each student grab one card at a time. The first student to match all forms of the same verb wins. Rather than having them simply draw new cards, you may choose to let students steal cards from other players; this adds an extra element of chance to the game and increases the degree of strategy. The student must announce when she is one card away from winning; otherwise, she will have to wait to announce the win until the next round.
Create a tic-tac-toe grid with different subject pronouns in each box to help the student identify which form of the verb to conjugate. To win, the student must correctly identify the conjugated form of the verb and get three in a row, either across, down or diagonal between corners. This game adds an extra layer to the game of tic-tac-toe, since the other student can win if his opponent makes a mistake in the conjugation of his verb.
Write an infinitive on the board; below the infinitive, write the subject pronouns. Divide the classroom into two teams; each team will send one member to the board. The teacher will call out the verb to conjugate, and the first student to correctly conjugate the verb in all its forms wins a point for the team. Play until every student in the class has had a chance to compete. If you have an uneven number of students, one team will let the one student play twice.