of course - Singer sold this nifty zigzag/decorative stitch attachment - just make sure to get one for the 301 slant and not the short shank. They are on eBay quite often.
Then you can go broke buying all for of the extra cam sets that go with it. LOL!!
It's like the one in the middle - the box will say "301" on it. It comes with four cams, and then there are four more sets of four cams (Red, yellow, blue and white) so you can have a total of 16 different decorative zigzag stitches.