MO-Labs creates Mathematical Objects, see MO-Labs.com
. Currently, some of our Math Objects are on display in the exhibition "Forms and Formulas" at the National Museum of Natural History and Science at Lisboa, Portugal. It shows 45 of our Size-S cubic surfaces with lines and also six Size-XL surfaces (30cm tall) together with many new and historical models and even interactive pieces. See our MO-Labs Blog
for some more details.