By Date
Smallest deut reactor ever!
0 comments
earth reentry ships
0 comments
efficient water filter
0 comments
Silencer
3 comments
Smallest transistor
2 comments
Improved Battery Backup
0 comments
Liquid Crystal Display
0 comments
Tiny polonium reactor
1 comments
valuables
0 comments
A House
1 comments
4 byte memory chip
0 comments