Psssst!! Don’t tell anyone! I don’t own real piping bags. I mean, I did, once. But they were kind of a mess and hard to clean. I know, I know, you can buy disposable ones. They’re definitely the way to go. But what’s a gal to do when she doesn’t have even disposable piping bags!? She uses…a sandwich bag.
When I needed to stuff the squash blossoms I used a sandwich bag. Not only was filling the little suckers easy, it also made clean up a snap. All you need to do is put a sandwich bag in a glass, like this:
And then fill it up with your filling, icing, etc….
Remove the sandwich bag from the glass, snip off a bottom corner of the bag with scissors and voila! A piping bag!
You’re clean, your counter is clean, you can pipe to your heart’s content and you can throw it away when you’re done!
Enjoy!
frijolita 
yep! this is the way to go! i also use gallon size bags when i’m frosting cupcakes. the best thing is that if you mess up on the corner, you can switch to another corner and frost from that one! Or, I guess you could have two different “tips” and alternate between the two. The only issue i’ve run into with plastic bags is that I can’t use piping tips if I want to, they just seem to get lost. I think that’d be solved by using a coupler though, right?
You know, I may have to start going this route. Cleaning frosting out of piping bags is a PITA and leaves my hands so greasy!
I swear by this method – I remember watching my mom fill deviled eggs like this when I was a kid, and I guess it just stuck! In fact, I don’t think I knew what a piping bag was until I was an adult.