A smart trash bag. A contaminant-resistant spacesuit. These proposals, and over 100 more, have been funded by NASA for development.

Like some glorious love child of Shark Tank and Cosmos, NASA's Small Business Innovation Research (SBIR) program aims to fund visionary space exploration proposals sourced from small businesses. The idea is to spur innovation in the private sector while also accelerating the exact kinds of technological advances that NASA needs to reach its lofty goals in space, including recycling systems, lightweight materials, and autonomous spaceflight mechanisms.

On Wednesday, NASA officially greenlit 133 of these SBIR concepts to receive Phase II funding. That means an estimated $100 million total in contracts will be doled out to 112 businesses to develop prototypes of their proposed technologies, which range from planetary rover anchors to contaminant-resistant spacesuits.

These companies now have two years to deliver operational versions of their proposals to qualify for Phase III funding, which focus on bringing their products to market.

We scoured all the proposals to pick out our top four favorites, but you should check out the full list for yourself because it is satisfying as hell to see so many ingenious ideas coming from small companies.

Proposal: Adaptable Multi-Segment Altitude Control Balloon for Planetary Exploration
Company: Thin Red Line USA, dba of MKF Interests, LLC

It's high time we started deploying more balloons on cloudy worlds like Venus and Titan, which are not only interesting on their own merits but can also teach scientists more about Earth's climate system. Thin Red Line USA has a new design, abbreviated as AM-SAC, that would allow an interplanetary balloon to float through alien atmospheres for years at a time. This is an enormous extension over past balloon missions, including the Soviet Vega 1 and Vega 2 missions, which only floated in the Venusian atmosphere for a few days.

Read More: How the First Private Moon Landing Will Spur the Future of Space Mining

Proposal: Multipurpose Waste Disposal Bags for Heat Melt Compactor Application
Company: Materials Modification, Inc

Here on Earth, it's easy to haul trash out to the curb. But for astronauts on the International Space Station (ISS), garbage takes up a lot of space in limited quarters, and is normally unloaded only when cargo ships leave the station. Materials Modification is working on a specialized trash bag rigged up with a heat melt compactor that would reduce the volume of trash onboard the ISS—or any future crewed spaceships—while also mining water from the waste and decreasing microbial growth.