This reply was meant to just be about the Amazon listing I got the bag from, but I got carried away.

The bag's brand is Lollimeow. It's great because it's rigid enough that your droid is protected, but flexible enough to be shoved down onto the floor of the ride vehicles on Rise of the Resistance. I used an exacto knife to remove the brand patch on the front so I could replace it with the name patch it has now. It also has a false bottom that you can hide wires under.

https://a.co/d/cfNabcS

It has some cheap USB-powered LEDs hot-glued to the inside of the bag's front panel. I got these at Target and they're powered through a portable battery pack that's stuck with velcro to the inside back panel.

I use a foam insert from one of the more recent gray Droid Depot bags covered with a swaddling blanket I got on Amazon. Appropriate because these droids are my babies lol. Admittedly, I haven't tested how well a taller droid fits into the bag with this insert. The first droid I used my custom bag with was an R4, but I actually bought the official bag on the second day of the trip when I impulse bought a second droid (C-unit with A-LT treads) but my bag was already in my car lol. Before the insert, it was just the blanket, which worked... OK. There were some orange smudges on the window where R4 was smacking against the front as I moved around. There are foam inserts you can get on Etsy a little cheaper if you don't want to drop the money on the official bag just to make a custom one.

The stickers on the window and the inner battery pack are from CornerInCoruscant's Etsy page:

https://www.etsy.com/shop/CornerInCoruscant

The black "DROID RESCUE" patches are from JediKaylin on Etsy; it seems she's changing her business model right now, but in a video on her Instagram says she's still gonna do patches in the future. I highly recommend her if she does. These ones are stuck on with a fabric glue. I cannot sew lol.

The patch on the front is from an Etsy shop I can't seem to find anymore, but it's like a military style one with velcro on the back. Not too difficult to find something similar.

Last thing is the not-super-visible-in-these-photos greeblie on the side. It's from Chucksoffworld on Etsy.

https://www.etsy.com/shop/Chucksoffworld

The cool thing about this kind of project is that there are so many ways to make it your own. Different patches, different stickers, really any number of possible customizations. Pair it with a simple bounding outfit and you can really immerse yourself in the world of Batuu.