Hitchhiker's Thumb and a Box of Bullets (Tremor Scorch)

Handheld Mirror. Good Tremor support, works well for synergy with Coupled Oscillation and to offset the Tremor Barrier Adversity.

Leaving this pack without Desperado defeats the entire purpose of the backup unit roster. If the Radio or the Beak were missed, spend the Cost to rebuild the Ammo units towards more useful Support Passives instead.

Tributary Cigar is #1 priority to support the 4 Thumb IDs,
Necktie is massively helpful for the Thumb IDs for +15% damage and +1 Coin Power after fusing the Liu Uniform, as well as passive SP gain.
Searing Hammer is a fairly optional gift, as it's mainly good for boosting Scorch's damage through maxing out Burn Stacks on a mostly Tremor run.

The Sword-guard is the major winner here as it allows the fusion of Book of Swordplay, which massively buffs Rodion mostly, with the other Thumb and Dawn units except Meursault also gaining a lot from it.
Ohra Bond and Manacle make a great combo, especially if you can get Warning Notice from TKT.
The Water Dropper and Cane Sword are good to have and not necessary, given that Water Dropper only buffs Heathcliff on the turn that Rodion gets Disposal, and Cane Sword gives +10% Slash damage every turn.

If Cost is a problem or you're feeling unlucky, going to Unbound Wrath for Searing Brass and Entangled Fate to save Cost and come back isn't a terrible idea.
If you leave this floor without the Staticky Radio or Beak Necklace, use Cost on the next floor to take IDs like LCCB Ishmael and Full-Stop Hong Lu and replace them with more broadly helpful Support Passives, since Ammo is no longer a concern.

The team is primarily Tremor solely because of the watches granting +4 Coin Power to Tremor IDs' S3's. This is (in my opinion) the most useful combination of the 4 parts.
Chalice is great because it gives +2 Clash Power for most of the high Floors due to Offense Level differences, and Warning Notice is good to maximize Speed differences and inflict Bind.

You may be asking, why not Timekilling Time BokGak? Well, the gifts from the BokGak are almost all useless for all intents and purposes, and diluting the shop with junk Gifts with the same Keywords as the target Gifts seems like a tactical blunder in my eyes.

This Pack can be any number of things, Line 1 is just the most useful.

Alternatively, take District 20 BokGak if Falling Flowers was the Floor 3 pack, or LCB Checkup for miscellaneous Burn Gifts.

Burn.

The Thumb.

This Pack is easy, even if Clappity is a mediocre gift.

Generally a useless pack unless Molar Yi Sang is involved, albeit an easy one.

This Pack is easy.