Open a seed that has no Forsaken defeated, hang no Boss trophies, and stay towards the map center. That will provide you a great deal of tranquility.
Do not hunt trolls, eliminate them, but you may flag yourself for troll raids if you are doggedly persistent in hunting them, not tested it myself.
Stay out of the Black Forest at night. Killing numerous Greys will flag you for Forest is Moving. While it may require Ek to be eliminated, I'd be careful none-the-less.
Don't hunt skele's that also may flag you for the Skele raid, which might be allowable under certain circumstances even with no Forsaken eliminated.
Try and find the closet parts of any biome you want to utilize. Use portals if you can.
Avoid sleeping in biomes other than Meadow. Staying with Meadow will grant you the most time w/o inclement weather.
Have a sleeper/helper toon. One that can sleep the night back into day for your main, way too far deep in BF, or at sea in a huge storm. Using a 2nd toon to advance time can be crucial and useful. Or to gather quickly stashed resources another toon drops off. Can be used to repair equipment also.
GL!

Currently not without mods. See the Valheim Creative Mode post for details on what I use.

Originally posted by ℬℓα⊂₭ ℙℜ¡ℵ₠:

Is there an option for a sandbox mode where I have all the resources I need? I just want to build a cabin I was thinking about.

Without mods:

1. Go to Valheim properties, add -console to the launch options.
2. In the game playing solo, press F5 for the console window.
3. Type devcommands to enable developer command codes.
4. Type debugmode to enable limited creative.
5. "Z" enables flying. "B" enables build anything without using resources.

Unfortunately, creative mode still requires stamina. So just spawn yourself some high stamina foods like:

spawn bloodpudding 50
spawn bread 50
spawn eyescream 50

For faster stamina regen, you can do: spawn meadtasty 50

The "50" can be replaced with any number.

Also, other helpful console codes:

- Remove all item drops around you: removedrops
- Set time of day (the number here sets it to midday, to reset the tod of the day, log out and back into the game): tod .5

More info here: https://valheim.fandom.com/wiki/Console_Commands

Originally posted by Lecherous Lychee 🐸:

Originally posted by ℬℓα⊂₭ ℙℜ¡ℵ₠:

Is there an option for a sandbox mode where I have all the resources I need? I just want to build a cabin I was thinking about.

Without mods:

1. Go to Valheim properties, add -console to the launch options.
2. In the game playing solo, press F5 for the console window.
3. Type devcommands to enable developer command codes.
4. Type debugmode to enable limited creative.
5. "Z" enables flying. "B" enables build anything without using resources.

Unfortunately, creative mode still requires stamina. So just spawn yourself some high stamina foods like:

spawn bloodpudding 50
spawn bread 50
spawn eyescream 50

For faster stamina regen, you can do: spawn meadtasty 50

The "50" can be replaced with any number.

Also, other helpful console codes:

- Remove all item drops around you: removedrops
- Set time of day (the number here sets it to midday, to reset the tod of the day, log out and back into the game): tod .5

More info here: https://valheim.fandom.com/wiki/Console_Commands

thank you

Originally posted by ℬℓα⊂₭ ℙℜ¡ℵ₠:

thank you:albedothumbsup:

You're welcome. ^_^

That was very complete and deserves to be a Guide.

The devs want to add a sandbox mode, but it won't be for a while.

there is the console mode, look in the guide in the community and u will learn how to use it.
With it u can craft everything u want without any resources and other stuff