On all of these - imagine them in other colors - to coordinate with whatever stamps you choose.
The last envelope has a Celebrate stamp that has colorful polka dots. That stamp will be available fro quite a while and because it has so many colors - it is an ideal choice for your project.
These are actual envelopes from my blog.
I probably won't be able to do any new examples until I get home.
But, these show a nice range of options.
The prices are for addressing only.
Envelopes will range from 25-cents apiece to $1 apiece depending on the envelope.
Imagine this in a different color to coordinate with the stamps.
The apples and strawberries are only available in coils of 3,000 stamps. I have no idea who uses them. But, they are not available for your project. I'm sure we can figure out a nice design with one of the stamps that is available.
To letter in one color and add white would is $3 per envelope.
A script name with one flower is $2 per envelope
This is done with a scroll tip and to do it in one color is $2 per envelope.
To add the gold dots is an additional $1 per envelope.
These are very time consuming - $5 per envelope
Quick and easy - $1.50 per envelope
Time consuming - $7 per envelope