Here's the portable neb I use, but I generally only use it in my car on road trips.
This is from the website with the link:
The Invacare Stratos Portable Plus is a sleek, new portable compressor that will offer speed, ease-of-use and stylish design in one compact package. Small enough to fit in the palm of your hand, it will be ideal for those who desire mobility, expediency and efficiency in an aerosol delivery device. (<a target=_blank class=ftalternatingbarlinklarge href="http://www.invacare.com/cgi-bin/imhqprd/inv_catalog/prod_cat_detail.jsp?s=0&prodID=IRC1730&catOID=-536885346)
">http://www.invacare.com/cgi-bi...30&catOID=-536885346)
</a>
Ronnie