The 301's are the best! Do you have the long bed or the short bed version? The short beds will fit into certain cabinets and card tables too.
I have a black short bed, a card table and a trapazoid cabinet for it. (to cabinet mount a 301, you need a special metal 'cradle' that singer made. You can find them for sale on ebay, etc.).
My card table is a really neat contraption I found off of craigslist. It's metal legs... and will fit a 301, 221 or a 403. I have a 403 and the 301, so it's pretty neat. You can check out singers website or ismacs website for tables/cabinets used with which machines.
Love the 301 great great machine. And the extra 3 or 4 pounds to carry doesn't bother me at all. Great machine for classes.
Enjoy!