I've made some more improvements from different sources.
First of all, these little items from
Valquiria Studio (from their sci-fi and post-apoc ranges).
Power generator and beacons:

Control consoles:

Supplies and mines

Alien eggs (ew!). Translucent resin stuff:

More resin stuff:

Tokens:

About those tins, the upper one has a mere 'Prandium' on it (just
Latin Gothic for 'food', I'm keeping it within 40K standards). Below, one of them has the Blue Sun logo (I'm also keeping it Firefly friendly!)

The other one just has a bad pun: 'Bona Mala', which one could say means 'Good/Bad' really translates as 'Nice Apples'

More stuff, this time from TT Combat. Urban pieces to dress up a board


Besides, some street lamps by Fenris Games. I need lots more, and more sci-fi looking, but these were too good for the Price to let them go:

As usual, you can find it all
on the blog.