You need some more inspirations for the case of your upcoming MIDIbox SID?
How about this construction, made by an electronic newbie with a lot of help from Julien Voirin! 
Very well done!
poumtag wrote:
Hereās my stereosid, it was firstly a mono 6581 v1.7
control surface A, buildt by julienvoirin (selling it
was a good choice, Julien, Iād probably never have
started the project by myself because of my ignorance
in electronicsā¦).
This unit is now a stereo sid v.2 (6582A + 8580R5),
control surface C (a few things werenāt used: play
button, volume on the modulation matrix,ā¦).
The design was created with adobe illustrator then
printed on vinyl sticker, box is a Retex#5, PCBs are
from SmashTV, and knobs are from ALBS (thank you
Goblinz !). The work cost me roughly 350ā¬, but
because Iām a beginner I burnt a few thingsā¦
This is far from perfect: the inside is full of
cables, the printed sticker is 1mm much longer than
the drilled surface, knobs arenāt as close of the
surface as I wanted, ā¦ but it works !
Many thanks to TK and all the contributers for sharing
their knowledge, Iāve learned a lot thanks to you.
Very big special thank to julienvoirin who has been an
incredible hotliner who explained me everything with a
lot of patience (you even taught me that a resistor
doesnāt have any polarityā¦) !
I wanted a new toy to renew my set, Iām now like a
child with this gear !
I cannot contribute to electronic knowledge, but Iād
be happy to help anybody on design (regardless of the
ātoy styleā).
thanks again to all the people who make this project
accessible to newbies.
poumtaq
Serious Seventies design, I love it 
