Nálepka “urobsisám”

Insite test kit

Semen detection kit

Eggshell loudspeaker

Recycle your sperm

Pornogami

USB Finger

Brewing Your Own Beer

Lentilky+Vodka

Paper model factory

Gamephone

afrigadget

Village Toys (Uganda)

The microhydro plant

DIY for deviants

Homebuilt Airplane and Online Builder’s Manual

DIY Google search

The cone