Having a small gathering of immediate family for lo's first birthday. Tea, cake and toys! Want to make a few home made decorations and think DIY bunting is within my skillset 
Have googled and all the websites I looked at just say "use a hole punch". But they don't say what size.
e.g.
www.things-to-make-and-do.co.uk/paper-and-card-projects/paper-bunting/paper-bunting.html
When I've googled online retailers of crafting hole punches, they seem to offer a range of sizes.
Hole too big - thread/ribbon will fall through and there won't be enough tension to keep cards up
Hole too small - threat/ribbon won't fit!
Don't want to use pen or similar as it won't make a neat hole.
Can anyone advise what hole punch to get for this type of project>
Thanks in advance MN!