Similar experience to the nanobots mod many of you all know,
cheap and easy to craft and usable right from the start of map.

This mod adds cheap construction robots that will spoil in one minute,
though if the stack spoils in a player's inventory it'll only spoil one item.

This is to make sure the handcraft-only bots cannot be used practically once you get roboports online,
and due to their spoiling nature you'll want to transition to modular armor and real construction bots eventually.

Note that until you transition to modular armor you'll want to not wear any armor at all or this mod fails to work.
(also, try to avoid having any construction robots in your inventory before you switch to personal roboport equipment)