These might help for practising letters and Senior Infant words for homework:
Links for sight
vocab/dolch words
http://www.iboard.co.uk/activity/Phase-3-Tricky-Words-Train-748
Links for phonics
http://www.literactive.com/Download/live.asp?swf=story_files/Fishing_Bowl_US.swf
http://www.starfall.com/n/level-a/learn-to-read/load.htm (CVC)