Conversation cards to practice zero, first, and second conditionals.
Students could first sort the cards into which form of conditional they would need to use. The student groups or pairs could take turns picking cards to ask and answer questions.
These could also be used as writing prompts, questions for "speed dating" or round robin conversations, or to group students (i.e. print out two sets and students find partner with the matching card by only saying their answer to the question). The possibiltiies are endless!