Striving to find as many (101) uses as possible:

Plinths / Pillars / Yoyos / Coasters / Caps / Plugs/ Wheels / Lids / Candle Holders / Cams / Tiles / Displays / Bases/ Tokens/ Fountains/ Spacers/ Badges/ Paper weights/ Desktops/ Stamp blocks/Door Knobs/ Dials/ ....hmmm long way to go still.

Current range set

Square 25mm

sq25mmasq25mmbsq25mmc

 Square 30mm 

Squ40mm

Oct 50mm 

Oct50mm

Oct 90x140mm - Made from FoamX

oct90x140mmoct90x140b

Oct 160mm - Made from FoamX

oct160mmoct160b

Diamond 50mm

dm50mmp5902

Biker's plinth 35x77mm

p5889

30x75bikers 

35x77bikers 

25mm Base with lip edge

b1b2

40mm Base with lip edge

b3b4

30mm plug plinth with 25mm recess

b5 base5paint

42mm plinth with 30 & 25mm recess

b6base6paint

 Example pics (below). Stacked + with model.

base11base11

Currently machining, moulding new official sets.
Sets are being developed including circular, blocks, and large 200mm!