Where to buy just the spring to the coil?

[Bad_dude]

1990 Accord LX Sedan.
The other day I took the cap off to check inside. I noticed the spring was disfigured. The coil is fine. I bend the spring back close to the original as possible but I would like to replace just the spring. Could I just buy a spring alone? What size and length? The junkyard never have any distributor when I get there. I want to have a few spare coils and igniters just in case.

Thanks.

[ferenza]

I used a spring from a pen and it worked just just good.

[drew12000]

Same here. Replaced it over seven years ago. And it still works.

[Bad_dude]

But the spring from a pen has smaller diameter than the one from the coil. Wouldn't it not fit over the metal stem from the cap and coil?
Thanks.