Can I buy the sticky sided measurement sheet that covers the top of the EZ bow maker?
There are several styles of the EZ Bow maker kit so it might not be easy to find what you need.
Sometimes we just have to buy a new item if we cannot find a needed part.
All brands are expensive right now as it is almost 'bow-making season'.
Have you checked your local craft stores? Sometimes they have parts for sale as well as other supplies.
eBay has some parts listed but I did not see what you're looking for.
www.ebay.com/
I did find a very interesting site for a DIY bow maker from mostly Dollar Tree items.
www.southerncrushathome.com/
www.youtube.com/
I also found a forum that you might join and ask about this paper. Someone may be able to make a copy for you.
You might be able to find it on Amazon:
www.amazon.com/
www.amazon.com/
I doubt this part of the EZ bow maker is sold separately. You can buy Double-Sided Adhesive Sheets and cut to the size you need:
www.michaels.com/
You can buy double sided sheets. For example this Double Sided A4 Sheets have a lines (20 mm squares), it will be convenient for you to cut the pieces you need:
