Hmm? What Is This?

Make a guess at where Miss Heather may be going tonight. Here's a hint; this little bag is sitting next to my feet today. Contents:
1 light and comfy shirt
1 pair of sneakers
1 pair of cargo pants
1 pink baseball hat
1 unfinished sweater

If you said I would most likely be knitting at the Red Sox/Oakland game tonight you have guessed right!