It's such a shame if you just chuck them away!
Instead of throwing them in the bin , you could use them to make gorgeous greeting , Valentine's or Easter cards- here below you can see how it is done.
Otherwise, have a look on the internet for copyright free images.
Cut the silhouette out of card with scissors and use the left-over card which has the shape cut out as a template.
In this case, I chose a picture of yellow and orange tulips, which gave me Easter colours ( yellow ).
Put your template on top of your coloured picture and draw the shape ( of the bunny ) inside the template, following the edges of the template with a pen or pencil like below.
Choose where you draw so the shape is filled with the colour you want.
You may need to move the template around a bit for this.
I will do some more examples soon for Valentine's cards , also using old calendars, but I hope I have given you a bit of an idea.
Well, happy crafting with your old calendars!!