You know, they weren't fandom pins, but I had a hat, crocheted from hemp, that I put pins all over, kind of like that. Except the pins were mostly picked up from when family would go travelling, they'd get a pin that reminded them of the area and send it to me. So it was kind of a travel-hat? Anyhow, your cork pinboard reminds me of the hat.... I bet you could make a Wizard Hat with Harry Potter pins on it!

That totally counts, basically its any kind of content that you're interested in to the degree of flaunting what you have of it c':

There's all kinds of fun shapes to use, I'm planning on using a big heart shaped roster when I get my own place. I'll hang it on the wall and have it hold all my lolita and pink aesthethic pins c;

(Exactly why I want the window)

I wouldn't have a cork board now. Maybe I'll save it for later mostly because I know it'll get dusty and I'll have to dusty.

Speaking of hats and pins maybe you can add your merch pins to a lolita beret and then wear it with your coords. That would be super cute.

I usually wear my pins on my cardigans c:

Some lolitas make pretty sashes that they put all their pins and ribbons on which is also cute but to me it looks to much like they're celebrating an occasion like their birthday haha

Sashes aren't really every day wear so it would be incredibly odd ovo
A cardigan sounds good although I don't think I own cardigans. It's summer here too so I would sweat my life away.

I have a thick lolita coat to wear in winter, I do like to put one or two cute pins on it everytime I go out :P

Practice makes perfect, my first attempts at my bags were laughable at best c':

If you're ok with fanmerch you might still have some luck finding merch on sites like etsy, society6 and such. Commissions are also an option though ofc that increases the price tag and an itabag can already get quite expensive...

I have a patch-vest, its definitely a cool/cute idea, go for it! :P

I can highly recommend you check out Aliexpress this Sunday, on their 11.11 sale you can get lots of accessories for bags like stuff to use as background or insert, lights etc c;

Currently I only have two bags, one being a wip until I get a new insert and such (ordering this Sunday from Ali haha)

And this one is in need of a new insert as well, but I'm focussing on my bae bag first cause I have a really nice idea for it with the stuff I'll be ordering cx

And then I have another bag on the way c: