O has not been very interested in the activities on her Montessori shelf lately, so I decided to spice things up by adding a couple of new work and bringing out a few that she hasn't seen in a while. We first did the activity about a year ago, and it is a lot of fun! To do this activity you need a container that rolls (a small oatmeal container is perfect). We had several objects- shell, golf ball, marble, block, sponge, and we took turns putting in one object at a time while the other person closed her eyes. Then we rolled the container, and we took turns guessing what was inside. Fun and easy!