One enclosure optionI crammed my 10 gridseeds into a PC mid-tower case like this -

Seemed like quite a lot of work though

The 10 port hub I used was the cheapest I could find on ebay, ablout $6 (without power unit). I had a 5V 8A power unit laying about (bit of an overkill) so I used that to power the hub and raspberry. All seems to work well.
On the front I have just a mains on/off switch and one of the flap type cd blanking plates so that I can pull the flap down to get access to the raspi SD card if I need to.