You could try homemade playdough. ( I'll find th link I posted before for you if you like) Kids just love this! I have 2 nephews that are this age and they do
Also buy bubbles...kids love making bubbles. Colouring books are also good.
__________________ Lessly Proud SAHM to Alejandro and Aiden
You don't have to spend a lot to keep 3 year olds busy. I would try picking getting them some sidewalk chalk, bubbles (target has a great bubble machine for $10), puzzles and stuff like that and you should be set!
__________________
At Kids Craft Zone find creative ways to create fun kids crafts, kids games, kids bible crafts, holiday crafts and printable crafts for kids with items you already have in your home.
you could make liquid chalk. Its cheap and fun. All you need is water, corn starch, food coloring and some spray bottles. It don't take much starch. And if there is snow on the ground its fun to spray color on the snow.