It’s hard to work up much enthusiasm — or any at all — for “Little Jar,” a limited-cast/couple of settings COVID comedy that comes too late to cash in on “Look at the movie they got made despite restrictions” and far too soon to tap into COVID lockdown nostalgia.

It’s a “Marcel the Shell with Shoes On” without the wit or charm, tracking the ways an obsessive-compulsive loner (Kelsey Gunn, no, not related to James, near as I can tell) goes nuts when she’s trapped at home with no phone, wifi or for some reason, TV.

Gunn plays Ainsley, a cubicle inmate who can never have too little “face to face” time with her annoying colleagues, and never too much “personal space.”

“I just don’t like people,” she admits, and we get it. So does her brother. When the COVID lockdown kicks in and she’s sent home to her house in the woods for “two weeks,” he (Jon Snow) phones her with a “This is really working out for you, huh sis?”

Groceries delivered by a handsome but far-too-chatty Marvin (Nicholas Anthony Reid), endless hours to do her compulsive cleaning, meticulous button replacement on garments and the like. A little “if I got out without a mask on I’ll die” paranoia seems like a fair tradeoff.

And then her phone and wifi service goes out and Ainsley is all alone. Don’t even THINK about visiting the coughing neighbor. Finding a dead mouse just tops it.

But when she hesitages to send the corpse down the garbage disposal we wonder. When she dresses it up, gives it pins for eyes and a nose and names it “Ulysees” because she’s tackling James Joyce, we wonder more.

And when she starts having conversations with it, making it tiny furniture, framed photos and outfits, when it starts showing up places she didn’t “put” him, and when a well-dressed lady-mouse (also “stuffed”) starts keeping his company, we know she’s lost it.

Whatever potential this material might have had is frittered away in a script that doesn’t play or read as funny and direction that can’t help that.

Ms. Gunn mugs a bit and isn’t so much bad as not colorful enough to pull off what is almost a one-woman show. Movies that fail are rarely the fault of the actors. Unless they co-write the mostly charmless script.

Rating:unrated, a little profanity

Cast: Kelsey Gunn, Nicholas Anthony Reid, Jon Snow

Credits: Directed by Dominic López, scripted by Kelsey Gunn and Dominic López. A Good Deeds Entertainment release.

Running time: 1:30