Here is a game that is an absolute favorite with my kids.
The object is to collect as many pairs of sight word cards as you can. Students spread the cards out, face up, with the bell in the middle. I like to use double sided (the word can be read from either direction) cards. I have two sets that are currently free in my TpT store if you want to download them from there. Look under Sight Word Playing Cards set 1 and set 2.
Students search for matching pairs of words at the same time. Whoever spots a pair picks up the two cards, says the word out loud and then hits the bell (ONE time). They put the pair aside, and then race to find the next pair. Students do not need to take turns, its first come, first get! It can get a little noisy but the students get so excited to play. It really helps them develop automaticity in reading their sight words.
It's so easy to set up, but a practice center that they will ask for all year. Later I use the same "game" to have them match sentences and corresponding pictures.
Find yourself a bell (Office Depot and Staples have them) and I guarantee that it will be a resource you'll use over and over again!
I hope your students enjoy this game as much as mine do (this one and Smack-a-Bug Sight Words are perennial favorites). And remember, each time the bell rings it's another word practiced!