Does this problem sound familiar?
You're on an awesome adventure exploring the vast world of modded Minecraft, but your broke, needy roommate says something ridiculous like "hey, do you want to check out this new thing I built?" and it's like, "uh, yeah buddy. I'm 100 blocks out, I'm a little busy." Conversely, have you ever been working on something cool and awesome and you want to show your loser roommate so that he'll be inspired to do something worthwhile with his life but he says something ridiculous like "sorry, I'm about 2000 blocks away, let me clear this dungeon and I'll head right back."

Preposterous.
These limitations of space and time are ruining our youths' social experiences and development.

That's where Homestones comes in. It adds an item called the "Homestone" which, on first use takes the user back to their spawn coordinates, and on second use returns them back to where they were before use. Now you can adventure with ease, come back home, and then pick up the adventure right where you left off.
The homestone costs little more than an enderpearl, some iron, and dye, ensuring it's available early on, and it's reusable.
When the homestone is blue it will take you to spawn, when it is red it will take you to its saved location.
To wipe the saved location, craft the homestone alone in a crafting table.

The other item added by the mod is functionally identical, but visually different for fun.

You can feel free to use this mod in a modpack, rewrite it from the ground up, whatever you desire as long as you credit appropriately.
I do not have any intention to release the source code as it is held together with spaghetti, ducttape, and MCreator prebuilt functions. In the same vein, I am unlikely to port this or bugfix.
(All that said, it really is a simple mod, major bugs should be unlikely)