Touch Math Time (I looked for this on google. It used to be part of the Upper Grades set, but I can't find it anymore. I really like it because it's visuals are clean and simple with a lot of white space. It also integrates time before and time after within each interval.)
Clocks from two paper plates from E Is for Explore
Simple morning work worksheets from Math Fact Cafe. This site has a worksheet generator that shuffles the problems and you can also set the parameters for what skills you want on the worksheet. Love that! Again, the visuals are clean and there's a lot of white space so it's not really busy and overwhelming.
I also have quite a few file folder games that I have made and collected over the years. Those are coming out too.