Three pounds sounds plausible for a small houseplant...but when we add in the weight of the soil--which is usually pretty light...but what about water...it has weight and like most people we continually add water when we think the plant needs it. So that limits the pot to be of light material--plastic is the norm--and we then look to whether it has a water drainage bottom reservoir.
Plastic has some advantages; they come in various sizes and colors to go with room decor. There is even clear plastic that allows the soil mix to be viewed.
But they are non-porous..they hold in a lot of water; they don't absorb such as clay or wood. The soil stays wet longer --which, in some cases, for those that like heavy moisture, is kind to. Still they need something between the soil and the bottom drainage hole--GOSH..it has a drainage hole doesn't it--so that the water doesn't hang around the roots too long.
Clay pots is still the best for novice and beginners.
If you are a caring person and can be trusted to water only when the plant needs it...and only as much water as the plant can use--drainage holes might be left out of the equation.

If you trust the weight can be less than what the sticky hook can hold--then that kind of hook might be tried.
If not why not think the kind of plant, given a floor or table position, that flies--up posts, along walls with sticky hooks, over bookcases, ending up on a shelf above. (philodendron comes to mind.
Pedestals, while looking good as part of the decor, can hold a large pot and if given a 'sleeve', no attention to drainage is of concern.

There's nothing wrong in adding a look to a room with a colorful plant sitting on a table.

Another option might be to try to find very small and lightweight plants that don't require a screwed-in hook. For example, if it doesn't get too cold in the sunroom over the winter, you could put tillandsia in little glass ornaments on the wall or something along those lines. Tillandsia are tiny enough that they could easily hang from a stick-on-the-wall hook.