There’s the older FT Delta design. If you build it light and use conservative throws, it flies slowly and easily. I flew mine with a 450mah 2s battery, a micro receiver, and a 19g motor. It flew very gently, but was still very maneuverable.
On the other hand, if it’s overweight it is very difficult to fly. My first attempt had too big of a motor, too big of a battery, and the heavy foam board. You had to fly that thing very fast to keep it in the air and it was super twitchy.