I'm not sure if Dollar Tree carries these year round or not. (They also sell the red plastic baskets!) This was the first time I had seen them, so I bought 2 packages (and I would encourage you to purchase them this summer, if you think you'd use some).
Since they are food safe, these would be great to use in packaging kitchen gifts. I think they would work well for wrapping small loaves of quick bread like cranberry, lemon, pumpkin, and so on. Wouldn't they also be cute lining a basket of gingerbread men or a tin full of cookies?
For a whimsical container in which to present cookies or take them to a potluck or cookie swap, you could buy one of the red plastic baskets, line it with one of these checked liners and fill with cookies, then pop the whole thing into a clear plastic bag for transport. This would make a nice neighbor gift, as well.
Another fun use I thought of was to place one of these liners in the red plastic basket and then fill it with felt food of the take-out variety, like hamburgers, sandwiches, chips, etc. Wouldn't that be a cute way to present a gift of felt food like those below?