Maybe you're

The "loop" side of Hook and Loop fastening (Velcro)

People think a part of me is sticky, but i'm not. I do have a sticky friend though.

the hook side might be considered "sticky," as it grabs onto the hook side.

I can create almost anything, but i'm not very creative.

This seems weak. It creates closed shoes/clothing/boxes from open ones? um...

After I have done my thing, you can't tell that I did it. To be honest, it wasn't my creation to begin with.

The fastener is positioned between two objects, so it's hidden. It doesn't create anything, just puts two parts together.

The title:

The "loop" half doesn't do anything with the "hook" half. Then again... "A patch is used inside astronauts' helmets where it serves as a nose scratcher." - Wikipedia)

Maybe you're

The "loop" side of Hook and Loop fastening (Velcro)

People think a part of me is sticky, but i'm not. I do have a sticky friend though.

the hook side might be considered "sticky," as it grabs onto the loop side.

I can create almost anything, but i'm not very creative.

This seems weak. It creates closed shoes/clothing/boxes from open ones? um...

After I have done my thing, you can't tell that I did it. To be honest, it wasn't my creation to begin with.

The fastener is positioned between two objects, so it's hidden. It doesn't create anything, just puts two parts together.

The title:

The "loop" half doesn't do anything without the "hook" half. Then again... "A patch is used inside astronauts' helmets where it serves as a nose scratcher." - Wikipedia)