enclosure with cutouts for terminal blocks and USB

Am looking for an inexpensive pre-built Arduino system in an enclosure. Expect that there will be terminal blocks (for digital i/o) and USB connector openings. Does anyone know of such systems for sale.
Thanks
snowyowlster

just laying around were some dat-tape-enclosures

i cutted some pieces out for the connectors and the pin-rails

so i had some exchangeable ardutainers easy to connect with my stuff on an protoshield

perfect size for dieci

but then the nano came out …