Thanks to Paul I've got a very easy way to make bases.
First, the sand:
Then, the wood glue (or the Swedish equivalent "Trälim" :-D) :
Something to mix in (this is an after-pic):
And put them all together:
Hmmm, strange. It didn't work.
Just kidding. Not plain enough I thought at first.
But with houses and figures and stuff:
Now I just have to finish painting the last five figures and some other stuff, chop off the bases of the figures already painted and paint boots, feet and hooves. Figure out why he fell down the stairs (probably through a poll at Bennos) and then it is finished.
But Valter thought I could rather play with him. Which I did. :-D