Here are some great activities for two year olds.
This is a collection of over 100 Montessori Inspired Activities for Toddlers. This is a years worth of fun hands-on play ideas for 1-2 year olds. - www.mamashappyhive.com
Potato Finger Paint
Rainbow Discovery Bottles
The Iowa Farmer's Wife: Baby & Toddler Sensory Bottles
Fun with Sensory Bags | Growing A Jeweled Rose
Texture sensory board for baby. Made using free carpet and tile samples, paint chips, ribbons, etc.
Create a Peek-a-Boo Sensory Board for your toddler to explore could make this a matching sensory activity
Three different DIY sensory boards along with ideas for how to include older siblings from Fun at Home with Kids