When playing with no portals you tend to end up with a lot of small bases. If you aren't careful you will end up with either a lot of duplicated functionality , the need to move material around all the time, or both.

One example might be a farm. You will only visit it periodically just long enough to harvest and replant and as you progress, you will likely want to move it closer to your current 'front line'. However, I suggest rather than thinking farm you think 'food production facility'. I mean, why bother moving the produce elsewhere to cook?

Rather than making an empty run to the farm to harvest and haul back produce, why not haul the other ingredients to the farm, harvest and cook, then leave with a load of food?

In a similar vein, the cultivator is a required tool for farming, but do you really need a fully upgraded cultivator, and do you want to be running to a repair station when it breaks? Perhaps you arrive at your farm and realize you left your cultivator back at another base? Why not keep a cultivator at each farm and have a basic forge there to repair it?

What about defenses? Don't you need to defend the farm against raids? If you take advantage of Valheim's Rule of Three and Forty the answer is no. No because there will never be a raid there. All the defenses you need is a simple fence to keep graylings out of your crops.

Note that what I'm calling Valheim's Rule of Three and Forty might be considered a spoiler, however it is clearly stated on the official wiki. The rule is simple, except for one specific event which can occur anywhere, an event (raid) will only occur when a player is within 40 meters of three or more base structures. Base structures are also those which suppress spawns like campfire, bed, workbench, forge, etc.

I will just say that if you keep things simple enough you don't have to worry about raids. For the micro-farm, that means you only want a small shelter with a forge, a campfire, and use the "3 cooking racks and cauldron" layout so you can cook both meats and combination foods with only one campfire. Throw up a fence around the area to keep graylings and such out of your crops, beehives will help there too.

When building the farm, I'll just say follow this build order rather than spoilers. Plop down a workbench, build a shelter large enough to hold a forge, campfire, and a few chests (although those would probably be ok outside in the weather. Build the forge and any chests. Do not build a campfire yet. Put up your fence and beehives. Then destroy the workbench - you don't need it anymore.

Lastly create the campfire,and use one of the three cooking racks and a cauldron arrangements. Campfires and cooking racks don't require a workbench and a cauldron requires only a forge.

That's it for the micro farm. You can apply similar ideas to create repair micro bases that just have enough upgrades for workbench and forge to meet your equipment's minimum repair level. You can even have 'bed and breakfast' micro bases that just have a bed, campfire, and all the comfort items you can build.

Other micro bases might be things like combination mini-warehouse and cart-in-a-box repair, kiln and axes repair wood cutting center, smelter and pick repair mining base, etc.

One last note, keep your mini-bases at least approximately 100 meters apart. If you place them closer in clusters, you're better off building a regular base since you'll need defenses.

Hope this helps and I'd like to hear your ideas, and how you handle logistics in your no portal runs.