The MBTA website lists a "5-Day Flex Pass" Scroll down, it's at the bottom of passes.

"Get five 1-day passes for a 10% discount compared to round-trip travel 1-day passes valid for 24 hours of unlimited travel."

The way you describe what you are buying, this may be a fit for you. You effectively buy a Zone 1 day pass, ride inbound from QC to SS, then outbound from SS to Ruggles, on one ticket, then back.

David's Bridal in Westwood,

Frugal Fannies in Dedham

You have (at least) two choices:

1. C&J Bus to the "Transportation Hub" at the southern end of Pease Tradeport. From the pease "hub', take a COAST bus into Portsmouth.

2. Amtrak Downeaster train from North Station to Dover NH, then COAST bus to Portsmouth.

Not in town, but Rockland (MA) Flag Co. may have what you need.

<https://www.facebook.com/RockBlock1955/>

It's about 40 minutes south of downtown.

Again a drive, but Savers in Nashua NH & Plaistow NH have sizeable toy sections. The Savers in Danvers seems to be overcrowded.

From 9 Days ago:

<https://old.reddit.com/r/AskNYC/comments/10i1ds4/where_can_i_go_to_turn_family_videos_that_are_on/>

I found a lot of this info online with a combination of:

tools.usps.com for USPS services, and

Google maps to get me actual locations.

I have personally used the Fort Point office to mail a package just before I boarded an Amtrak train.

The Fort Point location is next to South Station, so, you could take the Silver Line SL-1 bus to.from Logan, although it is rather slow.

The USPS.com site used to be better about telling you if a USPS APC is at an office; like it now says there's an APC at Chelsea, but I'm unsure if East Boston has one. The APCs are very useful for printing that special oversized label you need for a late nite early morning mailing.

MBTA police have been locking up South Station after 10PM to drive the homeless out, so, to reach USPS Fort Point from South Station, you may have to walk outside via Summer Street to USPS.

The USPS Office at Fort Point, South Station (25 Dorchester Ave, Bos, 02205) Operates 6AM-Midnite, Mon-Sunday.

The East Boston USPS Office is at 50 Meridian Street, but has more normal hours, 9AM-5PM

If you can provide the envelope, many (if not most) USPS locations (Fort Point, Milk Street, Back Bay) have an APC (Automated Postal Center == A Postal ATM kiosk), whcih can dispense pre-printed stamps & labels.

Most Post Offices offer free envelopes for Flat Rate and Express Mail Service; you could carry the envelopes with you, and print appropriate lables at the USPS APC kiosk.

USPS Flat Rate means you pay the highest postage, irrespective of weight or distance, for the item. USPS Express Mail, like the name, is basically next day delivery, for a premium price.

Fedex has a "Ship Center" service desk with normal business hours, (9AM-9:30PM), and a Fedex "On Site" Office, at 1 Kelley Sq East Boston, which claims to be 24 hours.

EDIT: Further Thoughts:

A Fedex Office site (used to be Kinko's) may be a perfect match. They can print, box and mail your document for you. Fedex Office can also do remote printing to other Fedex Office sites.

The nearest Fedex Office site seems to be (ironically) 10 Post Office Square, Boston 02109. Only Fedex Drop Boxes in East Boston.

Universal Hub & MassDOT answered this in 2016:

<https://www.universalhub.com/2016/all-longfellow-bridge-salt-and-pepper-shakers-back>

Woodland Station on the Green Line D Branch, offers overnite parking at $7/day M-F; weekends $3/day. The parking is a multilevel structure, so one can park sheltered from the snow.

Woodland is one stop inbound from Riverside, easily reachable via Mass Pike & Rte. 128.

<https://www.mbta.com/stops/place-woodl#header-parking>

Two notable points:

MBTA made the "2 bus plus rapid transit" transfer within 2 hours available about a year ago. So, at most, you only pay the "subway" fare portion for a 3-vehicle ride.

As you swipe in/tap in, keep an eye on the LCD display on the farebox/turnstile it DOES display your remaining balance as you enter.

When in doubt, a Fare Vending Machine is your friend. Just press the "More Info" softkey to read your balance.

Not in Cambridge, Varsity Swim Shop <www.varsityswim.com> is in North Andover, right off MA Route 28.

The Boston Customs House (now renovated to a hotel) has an observation deck open 6 days/week at 2PM, with you making a reservation 48 hours in advance.

From the website:

<https://www.bostoncentral.com/customs-house-boston-observation-deck-views>

"...Customs House Observation Deck Tours Timing is everything when visiting this venue, as the 26th-floor observation deck is only open once daily (at 2:00 pm 6 days a week with the exception of Fridays), and weather permitting, so its a bit of a roulette play. But well worth it if the stars align for you.

Registration is required 48 hours in advance by calling 617-310-6300 (x4 - front desk). No back packs are allowed, and there are now only 8 people allowed per reservation."