Summer Preparation

Summer is always a time I like to come up with new ideas, read, and reinvent myself. I always get so excited about a new year. I am working on math baskets this summer. I want them to be independently used and to work as practice for concepts that we cover. I plan to introduce them one by one as a warm up activity and use them a few times as a class before they are available as a basket for them to use on their own. This won't be a whole class thing. I am thinking they will be useful when I want to reteach something to a group and I need something for the rest of the students to do. I got the greatest little baskets at the dollar store and have them labeled so they will know if the activity is for one or two people. Does anyone one out there have some ideas for some of my baskets?